Delicious & Healthy Apple Cinnamon Baked Oatmeal: Gluten-Free, Dairy-Free, and Easy to Make
This apple cinnamon baked oatmeal is a true delight, offering an unparalleled combination of flavor and texture. Imagine warm, tender baked apples, infused with aromatic cinnamon and comforting spices, all nestled within soft, chewy oats. It’s a naturally gluten-free and dairy-free breakfast, with a simple option to make it completely vegan. Best of all, it comes together quickly, prepped and ready for the oven in less than 15 minutes, making it perfect for busy mornings or leisurely weekend brunches.

This wholesome apple cinnamon baked oatmeal is a quintessential dish, ideal for a cozy fall breakfast, a relaxed weekend brunch with family and friends, or even a convenient weeknight “binner” (that’s breakfast for dinner, for those new to the term!). Each bite brings together the comforting taste of warm baked apples, the satisfying chewiness of oats, and the rich, inviting aroma of classic fall spices. Crafted with real, nourishing ingredients like whole grain oats and nutrient-dense ground flaxseeds, it’s lightly sweetened with pure maple syrup, ensuring a truly feel-good start to your day.
While this delightful recipe is certainly enjoyable all year round, it truly shines during apple picking season. There’s something extra special about using freshly picked apples to create this comforting dish. If you find yourself with an abundance of apples and are looking for more delicious ways to use them, be sure to explore my other seasonal favorites: my incredibly moist gluten-free apple cinnamon bread, the perfectly chewy gluten-free apple blondies, quick and easy air fryer apples, a wonderfully comforting healthy apple crisp, and my fluffy apple cinnamon oat muffins. Each recipe is designed to celebrate the versatility and deliciousness of apples!
Why You’ll Adore This Apple Cinnamon Baked Oatmeal
This Apple Cinnamon Baked Oatmeal isn’t just a recipe; it’s an experience. Here’s why it’s destined to become a staple in your kitchen:
- Effortless Preparation: This baked oatmeal recipe requires minimal fuss, made entirely in one bowl. From start to oven, it takes less than 15 minutes to prep, making it perfect for busy mornings or when you need a quick yet satisfying meal.
- Packed with Wholesome Goodness: It’s a truly healthy dish, crafted with wholesome ingredients like whole grain oats and fortified with the incredible benefits of flaxseed meal. Flaxseeds are tiny powerhouses, adding an extra boost of dietary fiber, plant-based protein, and essential omega-3 fatty acids, contributing to overall well-being and sustained energy.
- Ultimate Comfort Food: There’s nothing quite like a warm breakfast to ward off a chill. This is a warm and comforting dish that wraps you in coziness, making it absolutely perfect for chilly fall and winter mornings, or any time you crave a little extra comfort.
- Accommodates Various Dietary Needs: Thoughtfully designed to be suitable for most dietary requirements, this recipe is naturally gluten-free and dairy-free. Plus, with a simple modification, it offers an easy option for vegan diets, ensuring everyone can enjoy a slice of this deliciousness.
- Excellent for Meal Prep: Prepare a batch on the weekend, and you’ll have delicious, healthy breakfasts ready to go for several days. It reheats beautifully, making your weekday mornings significantly smoother and healthier.
Key Ingredients for Perfect Apple Cinnamon Baked Oatmeal

For a complete list of ingredients and their exact amounts, please refer to the detailed recipe card located further down. Below, you’ll find specific notes and potential substitutions to help you perfect this dish.
OATS – The foundation of our baked oatmeal! Old-fashioned or rolled oats are truly the best choice for achieving that delightful, chewy texture. While quick-cooking oats can be used in a pinch, be aware that they might result in a slightly softer, mushier consistency, and the cooking time may be reduced. For those with gluten sensitivities or celiac disease, it is crucial to use certified gluten-free oats. Many reputable brands offer this option, such as One Degree, GF Harvest, and Bob’s Red Mill. Remember that even though oats are naturally gluten-free, they can sometimes be cross-contaminated with gluten-containing grains during their processing, so always look for the “certified gluten-free” label if needed.
Clean food tip: Like many grains, oats have unfortunately been found to be sprayed with glyphosate, a commonly used herbicide that has been linked to increased cancer risk, before they are harvested. To minimize exposure to this herbicide, choosing organic oats is highly recommended.
APPLES – The star of the show! For optimal flavor and texture in baked goods, crisp and sweet apple varieties are ideal. My top recommendations for this recipe are Honey Crisp or Pink Lady apples, as they hold their shape beautifully and offer a fantastic balance of sweetness and a hint of tartness. Fuji and Gala are also excellent choices. While Granny Smith apples can also be used, they tend to be more tart, which some people prefer, and will still yield a delicious result.
APPLE SAUCE – Essential for moisture and natural sweetness. It’s important to use unsweetened applesauce to control the sugar content of the dish. While plain unsweetened applesauce is my go-to, a cinnamon-flavored unsweetened applesauce would also complement the dish wonderfully and add an extra layer of spice.
Clean food tip: Apples frequently appear on the Environmental Working Group’s (EWG) Dirty Dozen list, indicating they can have higher pesticide residues. To ensure the cleanest possible ingredients, I strongly advise using organic apples and organic unsweetened applesauce.
COCONUT OIL – Provides richness and helps bind the ingredients. You can use either refined or unrefined coconut oil, depending on your preference. Refined coconut oil has a neutral flavor, whereas unrefined (virgin) coconut oil retains a distinct coconut taste. If you don’t require this recipe to be dairy-free, you can easily substitute melted butter for a classic flavor profile.
PURE MAPLE SYRUP – Our natural sweetener of choice. It’s crucial to use pure maple syrup, not imitation syrup, for the best flavor and quality. Pure maple syrup adds a depth of sweetness that perfectly complements the apple and cinnamon. If you need a substitution, honey or coconut sugar can also be used, though they will slightly alter the flavor profile.
MILK – Adds moisture and creates a creamy texture. I typically use unsweetened almond milk to ensure the recipe remains dairy-free, but any type of milk you prefer will work well. If you opt for a plant-based milk, always choose an unsweetened variety to avoid adding unnecessary sugars.
Clean food tip: When selecting dairy-free milk, look for unsweetened, plain varieties with minimal ingredients – ideally just the main source (e.g., almonds), water, and perhaps a touch of salt. Try to avoid milks that contain gums and various additives. If you’re using cow’s milk, I highly recommend choosing organic whole milk for superior quality and to avoid hormones and antibiotics.
GROUND FLAXSEEDS – A nutritional powerhouse! Flaxseeds are integral to this recipe, not just for their binding properties (acting as a natural egg replacer if needed, or boosting the existing egg’s function) but also for their incredible health benefits. They significantly boost the fiber content, provide a healthy dose of omega-3 fatty acids, and contribute extra protein and antioxidants. This makes your baked oatmeal even more satisfying and beneficial.
SPICES (Cinnamon & Nutmeg) – The heart of the “apple cinnamon” flavor. Ground cinnamon and nutmeg are the perfect duo to bring warmth and depth to this dish, highlighting the natural sweetness of the apples. Feel free to adjust the amounts to your taste, or even add a pinch of allspice or ground cloves for an even richer fall spice blend.
BAKING POWDER & SALT – Essential for structure and flavor. Baking powder helps the oatmeal achieve a light, fluffy, and cake-like texture rather than being too dense. A touch of fine sea salt is crucial for balancing the sweetness and enhancing all the other flavors, making them pop.
VANILLA EXTRACT – A flavor enhancer. Pure vanilla extract adds a subtle warmth and complexity that rounds out the overall taste profile of the baked oatmeal. Don’t skip it!
How to Easily Prepare This Apple Cinnamon Baked Oatmeal
Whipping up this cozy apple cinnamon baked oatmeal is surprisingly simple, requiring just a few straightforward steps. You’ll be on your way to a delightful breakfast in no time!
Step 1: Combine All Ingredients
Begin by adding all of your measured dry and wet ingredients into one large mixing bowl. This includes the rolled oats, ground flaxseeds, spices, baking powder, salt, chopped apples, applesauce, egg, milk, maple syrup, vanilla extract, and melted coconut oil. Mix everything thoroughly until all the ingredients are well combined and the oats are evenly moistened. This ensures every bite is packed with flavor.


Step 2: Bake to Golden Perfection
Once your mixture is ready, pour it evenly into a square baking dish (either an 8×8 or 9×9 inch pan works perfectly) that has been lightly greased to prevent sticking. Optionally, you can reserve a few chopped apple pieces to sprinkle on top before baking for an appealing visual touch. Transfer the dish to your preheated oven at 350°F (175°C) and bake for approximately 35-40 minutes. The oatmeal is ready when the edges are beautifully golden brown and the center feels set and firm to the touch.


After baking, allow the baked oatmeal to cool slightly in the dish before cutting into squares and serving. This cooling time helps the oats set completely, making for cleaner cuts and a more satisfying texture. These baked oats are not only perfect for a fresh breakfast but also excel as a meal prep option. Leftovers taste just as fantastic the next day, or even several days later in the week, making healthy eating incredibly convenient!
Creative Ways to Serve Your Apple Cinnamon Baked Oatmeal
This versatile apple cinnamon baked oatmeal recipe offers a multitude of delicious serving possibilities, catering to any meal or craving:
- Effortless Morning Meal Prep: For an incredibly quick and nutritious breakfast on busy mornings, bake a batch ahead of time and store it. Serve individual portions alongside a hard-boiled egg and a handful of fresh berries or sliced fruit for a perfectly balanced, well-rounded meal that’s ready in minutes.
- Decadent Topping Ideas: Elevate your oatmeal with a drizzle of your favorite nut butter – almond butter, cashew butter, or peanut butter all pair wonderfully. For an extra touch of indulgence, add a swirl of pure maple syrup, or a dollop of fluffy coconut whipped cream (or traditional whipped cream if you’re not dairy-free) for a truly decadent morning treat!
- Weekend Brunch Centerpiece: Transform your baked oatmeal into the star of a lavish brunch spread. Serve it alongside savory dishes like a flavorful dairy-free vegetable frittata, wholesome roasted sides such as sweet potatoes and Brussels sprouts, and crispy smashed potatoes made in the air fryer! The combination of sweet and savory will impress all your guests.
- Simple Snack or Dessert: A cooled slice of this baked oatmeal also makes for a satisfying and healthy snack, or even a light dessert. It’s substantial enough to hold you over between meals and curb sweet cravings guilt-free.

⭐Expert Tips & Notes for Success
Make it Vegan: To easily adapt these delicious baked oats for a vegan diet, simply replace the single egg with an additional ¼ cup of unsweetened applesauce. Ensure you’re also using a dairy-free milk alternative, and you’re all set for a plant-based treat!
Choose the Right Oats: For the best texture, always aim to use rolled oats or old-fashioned oats. These oats retain their shape and provide a satisfying chewiness when baked. Quick-cooking oats can be a decent substitute if you’re in a pinch, but they will result in a slightly mushier, less firm texture, and may require a shorter baking time. I have not personally tried making this recipe with steel-cut oats, but if you do, anticipate a significantly longer cooking time and a much chewier, denser final product.
Creative Add-Ins: Don’t hesitate to customize your apple cinnamon baked oats with exciting add-ins! Try incorporating dried cranberries or raisins for bursts of tart sweetness, chopped walnuts or pecans for a delightful crunch and healthy fats, or even a handful of chocolate chips for a touch of indulgence. For an extra nutritional boost, stir in a tablespoon of chia seeds (they’ll absorb some liquid, so keep an eye on consistency). To enhance the fall vibes even further, consider adding ½ tsp. of pumpkin pie spice along with the cinnamon and nutmeg!
Perfect for Meal Prep: This recipe is truly a dream for meal prep! Bake a full batch ahead of time and store the cooled squares in an airtight container in the refrigerator. They will stay fresh and delicious for up to 5 days. To reheat, simply microwave individual serving sizes for roughly 30-60 seconds, or until warmed through to your liking. If you prefer to prep the night before for fresh-baked oats in the morning, combine all the dry ingredients (including the chopped apples) in one bowl and all the wet ingredients in a separate bowl. Cover both and store them in the fridge overnight. In the morning, simply combine the wet and dry mixtures in your baking dish, stir, and bake!
Don’t Overmix: While it’s important to ensure all ingredients are well combined, be careful not to overmix the batter. Overmixing can sometimes lead to a tougher texture in baked goods. Mix just until the ingredients are incorporated.
Let it Cool: Allowing the baked oatmeal to cool slightly after coming out of the oven is crucial. This cooling period helps the oatmeal set, making it much easier to cut into clean, firm squares. If you try to cut it too soon, it might crumble.
Frequently Asked Questions About Apple Cinnamon Baked Oatmeal
Absolutely! Baked oatmeal is indeed a fantastic healthy breakfast choice. Oats are inherently packed with nourishing whole grains and a significant amount of dietary fiber, which aids in digestion and helps you feel full longer. In this particular recipe, we take the health benefits a step further by adding a generous amount of ground flaxseeds. This addition provides extra fiber, beneficial omega-3 fatty acids, an additional protein boost, and powerful antioxidants. The combination of healthy fats and protein from the flaxseeds also helps to lower the glycemic load of the oats, promoting more stable blood sugar levels. While “healthy” is a subjective term, this apple cinnamon baked oatmeal is undeniably a nutrient-dense and satisfying meal.
Baked oats offer a distinct culinary experience compared to their stovetop counterpart. Traditional oatmeal, cooked with just water or milk, typically results in a creamy, porridge-like consistency. In contrast, baked oatmeal, incorporating eggs and baking powder, transforms into a denser, yet wonderfully fluffy, cake-like texture. It holds its shape beautifully when cut into squares, making it a more substantial and satisfying meal that feels almost like a dessert for breakfast.
No, peeling your apples is entirely optional! If you prefer a smoother texture without any apple skin, then by all means, peel them. However, it’s significantly quicker and easier to simply leave the skin on. Plus, apple skins are rich in fiber and various nutrients, so keeping them on adds to the overall nutritional value of the dish. I personally prefer to leave the skin on for the added health benefits and a rustic appearance.
For achieving the best results in this baked oatmeal, I recommend using sweet and crisp apple varieties that hold up well during baking. My top choices include Honey Crisp, Pink Lady, Fuji, or Gala apples. These varieties offer a perfect balance of sweetness and a slight tartness, and they maintain their structure without becoming too mushy, ensuring delightful pieces of tender apple throughout your oatmeal.
Yes, you can use frozen chopped apples in this recipe. There’s no need to thaw them beforehand; simply toss them directly into the mixture. However, be aware that frozen apples may release more moisture during baking, which could slightly affect the final texture. The baking time might also need to be extended by a few minutes.
To ensure your baked oatmeal comes out cleanly from the pan, it’s crucial to properly grease your baking dish. You can use a light coating of coconut oil, butter, or a non-stick cooking spray. For extra assurance, especially if you’re planning on meal prepping and want easy removal, you can line the bottom of the dish with parchment paper, leaving an overhang on the sides to easily lift the entire slab of oatmeal out once cooled.
Storing & Freezing Your Apple Cinnamon Baked Oatmeal
This apple cinnamon baked oatmeal is not only delicious freshly baked but also fantastic for meal prepping and future enjoyment. Leftover portions should be stored in an airtight container in the refrigerator, where they will maintain their deliciousness for up to 5 days. You can enjoy leftovers cold directly from the fridge, or easily reheat them in the microwave until warm, which usually takes about 30-60 seconds per serving.
For longer storage, these baked oats freeze beautifully! Allow the oatmeal to cool completely, then cut it into individual serving squares. Place the squares in a freezer-safe container or wrap them individually in plastic wrap before storing them in a freezer bag. They can be frozen for up to 3 months. To enjoy, simply allow the frozen portions to thaw overnight in the refrigerator, or reheat them directly from frozen in the microwave until heated through. This makes for an incredibly convenient and healthy breakfast option for busy weeks!

Discover More Delicious & Healthy Oatmeal Recipes!
- Chocolate Baked Oats (no banana)
- Baked Berry Oatmeal
- Blueberry Chia Overnight Oats
- Overnight Oats with Protein Powder {5 ingredients!}
If you make this delightful apple cinnamon baked oatmeal recipe, please let me know what you think! I would be incredibly grateful if you could leave a star rating and/or a comment below to share your experience. And don’t forget to share a photo of your creation on Instagram or Facebook and be sure to mention @CleanPlateMama!
Eat Clean. Be Well!
-Sara

Apple Cinnamon Baked Oatmeal
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Equipment
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1 Large Mixing Bowl
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1 Square Baking Dish (8×8 or 9×9 inch)
Ingredients
- 2 ½ cups rolled oats (certified gluten free if needed)
- ½ cup ground flaxseeds
- 2 ½ tsp. ground cinnamon
- ½ tsp. ground nutmeg
- ¼ tsp. fine sea salt
- 1 tsp. baking powder
- 2 cups chopped apples (e.g., Honey Crisp, Pink Lady)
- ½ cup unsweetened apple sauce (no added sugar)
- 1 large egg (see notes for vegan option)
- 1 ½ cups unsweetened milk of choice (dairy-free if needed)
- 2 tbsp. pure maple syrup
- 1 tsp. vanilla extract
- ¼ cup melted coconut oil
Instructions
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Preheat your oven to 350 degrees F (175°C). Lightly grease an 8×8 or 9×9 inch baking dish and set it aside, ready for your oatmeal mixture.
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In a large mixing bowl, combine all the listed ingredients: rolled oats, ground flaxseeds, cinnamon, nutmeg, sea salt, baking powder, chopped apples, applesauce, egg, milk of choice, pure maple syrup, vanilla extract, and melted coconut oil. Mix thoroughly until all components are well combined and the oats are uniformly coated. If you wish, set aside a few apple pieces to sprinkle on top before baking for an appealing garnish.
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Pour the oatmeal mixture evenly into your prepared baking dish. Bake for 35-40 minutes, or until the edges appear lightly golden brown and the center of the oatmeal is firm to the touch when gently pressed.
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Once baked, remove from the oven and allow the baked oatmeal to cool slightly in the dish before cutting into squares and serving. This cooling period helps it set properly for clean portions. Enjoy this warm and comforting treat!
Notes
- If you’d like these baked oats to be vegan, you can replace the egg with an additional ¼ cup of applesauce and be sure to use dairy-free milk.
- Leftovers should be stored in an airtight container in the fridge and will stay good for up to 5 days.
- You can easily double this recipe and bake it in a larger 9×13 inch pan. Adjust baking time accordingly.
- This recipe typically yields anywhere from 6-9 servings, depending on portion size. Nutrition information provided is calculated based on 9 servings.
- For an even richer flavor profile, toast the oats slightly in a dry pan for a few minutes before mixing with other ingredients.