Peanut Butter Banana Baked Oatmeal 

By Rena Awada | Updated On December 13, 2022

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 packed with protein, fiber, and healthy fats for a nutritious breakfast you’ll make again and again.

top view baked oatmeal in a white dish topped with sliced bananas

Are you ready for a new baked oatmeal recipe that tastes like dessert? Let me tell you, this Peanut Butter Banana 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 healthy, wholesome ingredients and is served at breakfast time!

Why you’ll love this recipe

  • Incredibly tasty: This oatmeal bake comes out of the oven with the best taste and texture! It’s perfectly chewy, soft, and a little custardy with a slightly crisp topping. It tastes just like dessert!
  • Healthy & filling: A slice of this sweet breakfast casserole is super satisfying, nutritious, and will keep you going for hours. It’s packed with plenty of protein, fiber, and healthy fats to nourish your morning and leave you feeling satisfied. 
  • Quick & easy to make: Nothing complicated about this recipe! All you need is 10 minutes of hands-on time to mix all of the ingredients in one bowl.
  • Great for meal prep: We like making this at the beginning of the week, portioning it out into squares, and reheating it in the morning for a quick ready-to-go breakfast. It’s also freezer-friendly!
Baked oatmeal cut into squares and topped with sliced banana.

Ingredients needed to make this baked oatmeal recipe

This delicious and healthy peanut butter banana baked oatmeal is made with simple ingredients that you likely already have on hand. You’ll need:

  • Flax egg: We’re combining 2 tablespoons of ground flaxseed and 1/3 cup warm water to replace two eggs in this recipe.
  • Quick oats: For the best texture, we recommend quick oats in this particular baked oatmeal recipe. Use gluten-free oats as needed.
  • Baking powder: To help it rise a little and not turn out completely flat.
  • Salt: You always need just a bit of salt in a sweet dish like this to balance the flavor. We prefer kosher salt, but you can use table salt or sea salt.
  • Flavor makers: Pumpkin spice mix and vanilla extract add warmth and cozy flavor.
  • Bananas: This ingredient makes this dish perfectly moist and sweet. Be sure to use very ripe bananas!
  • Peanut butter: Such delicious flavor! Feel free to use crunchy, if you like a little extra nutty crunch in your oatmeal. We recommend the natural kind, made from just peanuts and salt.
  • Honey: To naturally sweeten the dish. Maple syrup or agave would work great as a substitute.
  • Milk: We like to use coconut milk, but you can use any milk you’d like.
  • Peanuts: The addition of chopped unsalted roasted peanuts really takes this baked oatmeal to the next level. However, you can omit it if preferred.
Ingredients to make baked oatmeal divided into portions.

How to make this recipe

This baked oatmeal 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.

  1. 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. 
  2. Next, make the flax egg: In a small bowl, whisk the ground flaxseed and water and set aside.
  3. Combine dry ingredients: In a large bowl, combine the oats, baking powder, salt, and spice mix.
  4. Then, mash bananas: In a small bowl quickly mash the bananas and add them to the bowl with the oats.
  5. Mix wet and dry ingredients: Add in all the remaining ingredients, together with the flaxseed mixture, and stir well to incorporate.
  1. Then, bake: Transfer the batter to the prepared baking dish. Bake for 20-25 minutes, or until fully set and the top is golden.
  2. 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.

Expert Tips

  • 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 tsp cinnamon, ¼ tsp nutmeg, and ½ tsp ground ginger, or just use 2 teaspoons of ground cinnamon to replace the spice mix.
  • Make this vegan baked oatmeal by replacing the honey with maple syrup.
  • Don’t have ripe bananas? You can easily ripen your bananas by wrapping them in foil and popping them in the oven at 350 degrees for 10 to 15 minutes.

Frequently asked questions

Are baked oats good for weight loss?

This oatmeal recipe is made with wholesome ingredients and oats are a good source of fiber. Fiber helps to slow down digestion and keeps you full longer. Also, staying satiated can prevent you from overeating and help you lose weight.

What happens if you bake oatmeal?

Whereas cooking oatmeal on the stovetop or in the microwave gives it a creamy porridge consistency, baking oatmeal gives it a chewy, soft and creamy texture, almost like bread pudding.

Are baked oats as healthy as oatmeal?

Baked oats are just as healthy as regular oatmeal to enjoy for breakfast. This recipe includes nutrient-rich ingredients like oats, healthy fats, and naturally sweetened fruit.

top view baked oatmeal topped with sliced banana

Storage recommendations

  • Storing leftovers: Place any leftover baked oatmeal in an airtight container or plastic, in the fridge for up to 4 days.
  • 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.
Baked oatmeal in a dish topped with peanut butter and bananas.

More oatmeal recipes to try

Slice of peanut butter banana oatmeal on a plate with a fork.

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top view baked oatmeal in a white dish topped with sliced bananas

Peanut Butter Banana Baked Oatmeal

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 packed with protein, fiber and healthy fats for a nutritious breakfast you’ll make again and again.
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Course: Breakfast
Cuisine: American
Diet: Gluten Free, Vegetarian
Prep Time: 10 minutes
Cook Time: 25 minutes
Total Time: 35 minutes
Servings: 6 servings
Calories: 332kcal
Author: Rena

Ingredients

  • 2 tbsp ground flaxseed
  • 1/3 cup warm water
  • 1 1/2 cups quick oats
  • 1 tsp baking powder
  • A pinch of kosher salt
  • 2 tsp pumpkin spice mix
  • 2 overripe bananas
  • 1/4 cup creamy peanut butter
  • 1 tsp vanilla extract
  • 1/2 cup honey
  • 3/4 cup coconut milk
  • 1/3 roasted unsalted peanuts coarsely chopped

Instructions

  • Preheat the oven to 350ºF and grease an 8×6-inch baking dish with a tiny bit of coconut oil.
  • In a small bowl, whisk well the ground flaxseed and water and set aside.
  • In a large bowl, combine the oats, baking powder, salt, and spice mix.
  • In a small bowl quickly mash the bananas and add them to the bowl with the oats.
  • Add in all the remaining ingredients, together with the flaxseed mixture, and stir well to incorporate.
  • Transfer the batter to the prepared baking dish. Bake for 20-25 minutes, or until fully set and the top is golden.
  • Once the oatmeal is ready, allow it to cool before cutting it into squares. Serve topped with sliced bananas, chopped peanuts, and extra peanut butter.

Notes

  • Storing leftovers: Place any leftover baked oatmeal in an airtight container or plastic, in the fridge for up to 4 days.
  • 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.

Nutrition

Serving: 1serving | Calories: 332kcal | Carbohydrates: 50g | Protein: 7g | Fat: 14g | Saturated Fat: 7g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 4g | Sodium: 125mg | Potassium: 375mg | Fiber: 4g | Sugar: 30g | Vitamin A: 27IU | Vitamin C: 4mg | Calcium: 74mg | Iron: 3mg
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