Baked Apple Oatmeal is hearty, healthy, and full of cinnamon flavor. It has wholesome ingredients like rolled oats, walnuts, and fresh apples. Pre-portion baked oatmeal and reheat for a leisurely breakfast. Enjoy a slice with maple syrup.
We love having ready-to-eat breakfasts in this household. Not only can this baked apple oatmeal be made ahead, but it is healthy and delicious too. One slice is hearty and filling thanks to wholesome ingredients like rolled oats and fresh apple pieces.
Baked oatmeal is easy to make and uses common ingredients. This baked oats recipe uses warm spices, fresh diced apples, and walnuts for a fun twist on the classic. It is perfect for breakfast or brunch.
The flavor is reminiscent of apple pie, which pairs perfectly with oats. The baked oatmeal, as well as my Banana Bread Baked Oatmeal and Strawberry Baked Oatmeal, can be pre-cut into squares and frozen for easy breakfasts. Warm the slices and top with maple syrup for a delicious, nutritious bite!
Baked Apple Oatmeal
Baked oatmeal is like cake you can eat for breakfast. Technically a baked custard, baked oats are creamy and rich. The structure is full of satiating, nutritious old-fashioned rolled oats. A sufficient quantity of creamy milk and egg turns the oats into a custard. Versatile to inclusions and flavors, like this apple variation, baked oatmeal is perfect for meal prep. Do you need more reasons to love this baked apple oatmeal?
- Made from wholesome, good-for-you ingredients
- Make it ahead, and breakfast is ready for the whole week
- One slice keeps you full all morning long
- Loaded with apples and warm spices
- Rolled Old-Fashioned Oats - Old-fashioned oats are the choice for this recipe.
- Milk - While the milk of choice can vary, milk is essential to the structure and texture of this baked oatmeal custard.
- Egg (room temperature) - An essential component of this baked custard is an egg.
- Avocado Oil
- Light Brown Sugar - In addition to the natural sweetness of the apples, light brown sugar is the only sweetener in this recipe.
- Apples (peeled and diced)
- Walnuts (chopped)
- Ground Spices - Like apple pie, this recipe uses ground cinnamon, ground nutmeg, ginger, and salt.
- Baking Powder - The baking powder assists in leavening the oat mixture.
See the recipe card for ingredient quantities.
- Preheat the oven to 375°F and prep your 8X8-inch baking pan with cooking spray.
- Toss the apples in the spices
- Mix the oats with the remaining dry ingredients.
- Combine the wet ingredients.
- Add the wet ingredients to the oat mixture. Stir in the seasoned apples and walnuts.
- Pour the mixture into the prepared pan and bake for 35 to 40 minutes until set.
- Avocado Oil - Coconut Oil, Melted Butter, Canola Oil
- Light Brown Sugar - Maple Sugar, Dark Brown Sugar
- Walnuts - Pecans, Almonds
- Less Sugar - Swap the light brown sugar for stevia or monk fruit sweetener.
- Dairy-Free - Use dairy-free milk.
- Vegan - Start with dairy-free milk and swap the egg for a flax egg. Mix one tablespoon of flax seeds and three tablespoons of water to make a flax seed egg. Refrigerate for 15 minutes to thicken.
Try my strawberry variation of this recipe.
How to Serve Baked Oatmeal
Enjoy baked oatmeal cold or warm—warm one serving (square) on a microwave-safe plate for 30 seconds to one minute.
- Drizzle with maple syrup
- Serve with fresh berries or banana slices
- Top with a dollop of Greek Yogurt
- Sprinkle with additional chopped nuts
- Top with a scoop of almond or peanut butter
Store cooled baked oatmeal in an airtight container, preferably proportioned, in the refrigerator for up to 4 days.
Can baked oatmeal be frozen? Yes, you can freeze-baked oatmeal. Cut the oatmeal into portioned slices. Place the pieces into an airtight container or freezer-safe zip-top bag. Freeze for up to 3 months.
Other Baked Oatmeal Recipes
- Pre-slice the oatmeal into servings and store them in an airtight container. Pull out a portion and microwave for 30 seconds - one minute, and enjoy.
- While baked oatmeal is great for meal prep, do not make the batter ahead of time. Once the custard is made, it needs to be baked right away.
Frequently Asked Questions
Baked oatmeal is technically a baked custard, which means it can be difficult to tell when it should be taken out of the oven. The top should be golden brown, and the mixture will be set, so it will no longer jiggle.
No, I would not substitute them in this recipe. This recipe is designed around the texture of the rolled old-fashioned oats.
The temperature at which you enjoy your baked oatmeal depends on your personal preference. Enjoy a slice cold on the go or reheat a slice in the microwave for thirty seconds to one minute.
Baked Apple Oatmeal
- 1 cup apples peeled and chopped small; about 2 small apples
- 1 teaspoon ground cinnamon
- ¼ tsp ground ginger
- ⅛ teaspoon ground nutmeg
- 2 cups old-fashioned rolled oats
- 1 teaspoon baking powder
- ½ tsp salt
- ⅓ cup light brown sugar packed
- 1¾ cups oat milk Whole or almond milk works great as well.
- 1 large egg room temperature
- 3 tablespoon avocado oil or melted coconut oil
- 1 teaspoon pure vanilla extract
- ½ cup walnuts chopped; optional
- Preheat the oven to 375°F. Grease an 8X8-inch square baking dish with cooking spray.
- In a small bowl, toss the apples with the ground cinnamon, nutmeg, and ginger.
- In a large bowl, mix together the oats, baking powder, salt, and light brown sugar.
- Whisk together the milk, egg, vanilla extract, and avocado oil. Add the wet ingredients into the oat mixture and stir to combine. Stir in the apples and walnuts.
- Carefully pour the mixture into the prepared dish. Bake for 35 to 40 minutes, until the top, is golden brown and the mixture is set. Allow the oatmeal to cool slightly before serving.
- Store in an airtight container in the refrigerator for up to 4 days, or freeze in slices for up to 3 months.