Baked Apple Oatmeal turns a pan of rolled oats into nine make-ahead breakfast squares. Spiced apples, maple syrup, and pecans do the flavor work. They feel like the best parts of fall wrapped into one pan. Soft apples, warm cinnamon, and that hearty, just‑sweet‑enough oat base that makes the whole kitchen smell like comfort.
I love tasty oatmeal recipes. Here are a few I always make: my Blueberry Baked Oatmeal and my Twix Oatmeal Caramel Bars.
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Why this Baked Apple Cinnamon Oatmeal Recipe is a Keeper
They’re wholesome without feeling “healthy‑boring,” comforting without being heavy, and flexible enough to customize with whatever you have on hand. It’s the kind of reliable, crowd‑pleasing bake that quickly becomes part of your regular rotation.
ONLY USE 2-4 OF THE MOST APPLICABLE FEATURES.
- Nine Servings: One 8 by 8 pan cuts into nine squares, which is most of a work week.
- Naturally Vegan: No eggs and no dairy. Applesauce and plant milk do the binding.
- Portable: Squares hold their shape, so they travel in a container without falling apart.
- Not Overly Sweet: A quarter cup of maple syrup total, so it reads as breakfast rather than dessert.
What Is the Difference Between Rolled Oats, Quick Oats and Steel Cut Oats?
Rolled oats are steamed and flattened between steel rollers, which is why they cook relatively fast. Quick oats are the same thing rolled thinner, so they soften faster and hold less texture.
Steel cut oats are chopped rather than rolled, and they stay much chewier through baking. This recipe calls for rolled old fashioned oats. They hold their shape in a bake without turning to mush.
Pro Tip for Baked Oatmeal
Stir the batter only until everything is just combined.
Overmixing works the oats too hard and gives you a dense, tough square instead of a tender one.
Ingredient Notes for Apple Cinnamon Baked Oatmeal
Each one plays a small but important role: the oats give structure and that cozy chew, the apples bring natural sweetness and moisture, and the cinnamon ties everything together with warm, fall‑ish comfort.
This is an overview of key ingredients. Get the full printable recipe with specific measurements and directions in the recipe card below.
- Rolled Old Fashioned Oats: Two cups. Use certified gluten free oats if that matters for your household.
- Dairy Free Milk: Two cups of oat, almond, or coconut milk. Regular dairy milk works if vegan is not the goal.
- Unsweetened Applesauce: This replaces eggs and oil, binding the bake and keeping it moist.
- Maple Syrup: A quarter cup is all the added sweetener. Increase to a third cup if you want it sweeter.
- Apples: One cup diced, divided. Honeycrisp apple or Granny Smith both hold up well.
- Pecans: Half a cup chopped, scattered on top so they toast during the bake.
Variations and Substitutions for Apple Pie Baked Oatmeal
These are just a few ways to make the bars a little different.
➡️ Add More Fruit: Blueberries, raisins or dried cranberries all work stirred into the batter.
➡️ Switch the Nuts: Walnuts substitute directly, or leave the nuts out entirely.
➡️ Boost the Nutrition: Chia seeds, ground flaxseed, hemp seeds or protein powder all mix in well.
➡️ Make It Sweeter: Increase the maple syrup to a third cup, or add brown or coconut sugar.
➡️ Bake in Ramekins: Divide the batter into nine ramekins and bake 25 to 35 minutes for individual portions.
Kitchen Tools To Make this Breakfast Square
Just a few simple kitchen tools that you have on hand.
- 8 by 8 Baking Dish: This size gives you nine squares at the right thickness.
- Mixing Bowls: One large bowl handles the entire batter in a single step.
- Measuring Cups and Spoons: The spice amounts are small and the liquid ratios matter.
How to Make Baked Apple and Oatmeal
This recipe delivers that perfect balance of cozy flavor and everyday practicality. The kind of thing you can whip up on a busy morning yet still feels like a treat.
The tender apples, warm cinnamon, and hearty oats bake into soft, satisfying squares that hold together beautifully, making them ideal for breakfast, snacks, lunchboxes, or grabbing on your way out the door.
These are just highlights. Get the full printable recipe with specific measurements and directions in the recipe card below.
- Preheat the oven to 375 degrees F and grease an 8 by 8 baking dish.
- Combine the oats, spices, baking powder, salt, milk, applesauce, maple syrup, vanilla and most of the apple.
- Transfer the mixture to the prepared baking dish.
- Top with the remaining diced apple and the chopped pecans.
- Bake for 35 to 40 minutes, then cool 10 minutes before slicing.
Prep Ahead and Short Cut Tips for Apple Baked Oatmeal
These squares really only take a few minutes to put together but here are a few things you can do in advance.
➡️ Assemble the Night Before: Mix the batter, cover the dish and refrigerate, then bake in the morning.
➡️ Bake and Portion: Slice into nine squares and store them in individual containers for the week.
➡️ Dice Apples Early: Cut them ahead and hold them in lemon water so they do not brown.
➡️ Reheat From Cold: Cover with foil and warm at 350 degrees F for about 20 minutes.
➡️ Freeze for Later: Squares freeze for up to three months in a freezer safe container.
Alternate Cooking Methods for Apples and Cinnamon Bake
- Use Ramekins: Nine individual dishes bake in 25 to 35 minutes and portion themselves.
- Double the Batch: Scale up into a 9 by 13 pan and add time, checking with a toothpick.
- Serve It as Dessert: Warm a square and top with non-dairy ice cream, caramel and extra pecans.
Can I Make This Recipe Gluten Free or Nut Free?
Yes to both. This recipe is already dairy free and vegan as written. Oats are naturally gluten free, but they are often processed alongside wheat, so buy certified gluten free oats.
For a nut free version, leave the pecans out entirely or swap in pumpkin seeds for crunch. Check your plant milk too, since some almond milk and oat milks are processed on shared equipment.
Store, Reheat, and Use Leftover Apple Oatmeal Bake
This easy recipe is simple to store, warm up and to use in different delicious ways.
- Storing: Store the cooled squares in an airtight container in the refrigerator for four to five days. They also freeze for up to three months.
- Reheating: Warm a square in the microwave for about 30 seconds, or cover the pan with foil and reheat at 350 degrees F for 20 minutes.
- Using Leftovers: Crumble a square over yogurt, or warm one and serve it as a healthy dessert with ice cream. It also works alongside Mini Apple Pie Bites, Pumpkin Donuts or Pumpkin Oatmeal Bars.
Expert Tips for Making This Baked Oatmeal Recipe
These are a few of the things I recommend for making the apple cinnamon baked oatmeal.
➡️ Reserve Apple for the Top: Hold back a quarter of the diced apple so the surface has visible fruit.
➡️ Toast the Pecans on Top: Scatter them over the surface rather than mixing them in, so they crisp.
➡️ Cool Before Slicing: Wait the full ten minutes, since warm squares fall apart when cut.
➡️ Taste the Batter: Check sweetness before baking because apple varieties change considerably.
➡️ Portion Immediately: Slice and container the whole pan right away so breakfast is genuinely grab-and-go.
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Easy Baked Apple Oatmeal
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Ingredients
- 2 cups Rolled Old Fashioned Oats, certified gluten free if necessary
- 1 ½ teaspoons Cinnamon
- ⅛ teaspoon Allspice
- ⅛ teaspoon Nutmeg
- 1 teaspoon Baking Powder
- ½ Sea Salt
- 2 cups Dairy Free Milk
- ½ cup Unsweetened Applesauce
- ¼ cup Maple Syrup
- 1 teaspoon Vanilla Extract
- 1 cup Apple, diced and peeled (divided)
- ½ cup Chopped Pecans
Instructions
- Preheat oven to 375 degrees F. Grease an 8×8” baking dish and set aside.
- In a large mixing bowl, add oats, cinnamon, allspice, nutmeg, baking powder, salt, milk, applesauce, maple syrup, vanilla extract and ¾ cup of the diced apple. Mix until ingredients are fully incorporated.
- Transfer mixture into prepared baking dish and top with remaining cup of diced apple and ½ cup chopped pecans.
- Bake in preheated oven for 35-40 minutes or until a toothpick inserted into the center comes out clean. Cool for 10 minutes before slicing and serving.
Christina’s Notes
- Use Rolled Oats: Quick oats soften too much and lose the texture this bake depends on.
- Do Not Overmix: Working the batter too hard gives you dense, tough squares.
- Reserve Apple and Pecans: Topping rather than mixing lets them brown and toast during the bake.
- Cool Before Slicing: Ten minutes lets the squares set so they hold their shape.
- Store Refrigerated: Keep squares in an airtight container for four to five days, or freeze up to three months.
- Scale the recipe: Simply adjust the serving size in the recipe card and the ingredients will update automatically.
- Make your own All Purpose Seasoning: When a recipe calls for All Purpose Seasoning, you can use my homemade All Purpose Seasoning recipe or substitute salt and pepper to taste.
- Meat doneness: I always use a meat thermometer to test for doneness when cooking meat.
- Use unsalted butter: I use unsalted butter so I can control the salt level in the recipe.
- Preheat the oven: Unless otherwise noted, always preheat your oven before baking.
For more helpful information about this recipe, such as variations, substitutions and other pro-tips, check out the blog post.
A great make ahead breakfast.