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Delicious Peanut Butter Banana Baked Oatmeal is like eating dessert for breakfast, yet it’s naturally sweetened with ripe banana and honey. It’s also a satisfying oatmeal recipe that is so easy to make and so delicious.
My peanut butter brownie baked oatmeal recipe is another one you will like.

Are you ready for a breakfast recipe that tastes like dessert? Let me tell you, this Peanut Butter Baked Oatmeal is a major winner! It comes out crisp along the edges and top, but soft and gooey on the inside with the best flavor. It’s almost like a giant peanut butter oatmeal cookie, but one that’s made with wholesome ingredients and is served at breakfast time!
I am so blessed that my kids love all these baked oatmeals I come up with! This one was a winner though 🥰. They love coming up with different flavor ideas that I could make next. So fun!
Ingredients you will need
This oatmeal bake is made with simple ingredients you likely already have. Below is a list of ingredients you will need. Full measurements are listed further down in the recipe card.
- Flax egg: I combined 2 tablespoons of ground flaxseed and 1/3 cup warm water to replace two eggs in this recipe.
- Quick oats: For the best texture, I recommend quick oats in this particular baked oatmeal recipe. Use gluten-free oats as needed. Rolled oats will also work and will be more on the chewier side.
- Baking powder and Salt
- Seasonings: Pumpkin spice mix and vanilla extract.
- Bananas: This ingredient makes this dish perfectly moist and sweet. Be sure to use very ripe bananas!
- Peanut butter: I used creamy. You can use almond butter too is you like.
- Honey: Maple syrup or agave would work great as a substitute.
- Milk: I like to use 2% milk, but you can use any milk you’d like.
- Peanuts: For topping option. But you can skip it.
How to make peanut butter baked oatmeal
This recipe is super easy to throw together! It’s really just a matter of stirring the ingredients together in one large bowl, pouring the mixture into a pan, and baking it up!
For full, printable instructions, reference the recipe card at the bottom of the post.
- First, you need to Prep: Preheat the oven to 350 degrees and grease an 8×6-inch baking dish with a tiny bit of coconut oil.
- Next, make the flax egg: In a small bowl, whisk the ground flaxseed and water and set aside.
- Combine dry ingredients: In a large bowl, combine the oats, baking powder, salt, and spice mix.
- Then, mash bananas: In a small bowl quickly mash the bananas and add them to the bowl with the oats.
- Mix wet and dry ingredients: Add in all the remaining ingredients, together with the flaxseed mixture, and stir well to incorporate.
- Then, bake: Transfer the batter to the prepared baking dish. Bake for 20-25 minutes, or until fully set and the top is golden.
- Finally, serve: Once the oatmeal is ready, allow it to cool before cutting it into squares. Enjoy topped with sliced bananas, chopped peanuts, and extra peanut butter.
Tips from my kitchen
- Feel free to substitute the flax eggs with 2 beaten eggs and add them at the same time as you would add the flax eggs to the other ingredients.
- You can make your own pumpkin pie spice! Simply combine ¾ teaspoon cinnamon, ¼ teaspoon nutmeg, and ½ teaspoon ground ginger, or just use 2 teaspoons of ground cinnamon to replace the spice mix.
- Make this vegan by replacing the honey with maple syrup.
Frequently asked questions
Even though they are cooked and you may be tempted to leave them out overnight, I highly recommend you store them in a container in the fridge since most are made with dairy and milk.
Yes. You can swap the peanut butter with any other nut butter of your choice. I love almond butter and it comes out just as delicious.
No problem. Replace the flax seeds with eggs if you do not care that this dish is vegan-friendly. You can use 2 eggs in this recipe.
Storage recommendations
- Storing leftovers: If you have leftovers, store them in an airtight container or plastic bag in the fridge for up to 4 days.
- Freeze: To freeze, place individual servings in an airtight, freezer-safe container or freezer-safe bag for up to 3 months.
- Reheat: Place individual slices in the microwave for about 1 to 4 minutes, depending on whether it’s at room temperature or frozen.
More oatmeal recipes
- Zucchini Blueberry Baked Oatmeal
- Lemon Blueberry Baked Oatmeal
- Chocolate Chip Pumpkin Pie Baked Oatmeal
- Healthy Oatmeal Bars
- Oatmeal Apple Crumble
- Overnight Oatmeal Recipe
- Homemade Oatmeal Granola Bars
- Healthy Oatmeal and Raisin Cookies
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This was incredible! Loved how easy to make. Plenty left over for snacks.