I buy a bunch of bananas every week to add them to smoothies, slice up to put on peanut butter toast, and use them to sweeten baked goods. One of the best ways to bake with them is in baked oatmeal. Baked oatmeal is great for meal prep because it’s simple to make and reheats well. If you make it on the weekend you can have breakfast ready for the whole workweek. Try this banana peanut butter baked oatmeal the next time you meal prep! 

bananas and oats


Old-fashioned oats

Old-fashioned oats, also known as rolled oats, work best for baked oatmeal. Don’t use instant oats, the texture will be too mushy. Steel-cut oats also won’t work well here because they won’t cook enough. Also, if you don’t eat gluten make sure to check that the oats that you use are certified gluten-free.


Use ripe bananas because they’re sweeter and will mash easier. For those following low FODMAP, you can eat up to 1/3 of a ripe banana and stay low FODMAP, which is the equivalent of one serving of this baked oatmeal.  

Oatmeal on its own can be very bland. Even though the bananas add some natural sugars, add a little maple syrup for a touch of extra sweetness.

Almond milk

This helps to make sure the baked oatmeal is not dry. You can use any type of non-dairy (or dairy) milk if you don’t have almond milk. I prefer to use unsweetened non-dairy milk to keep the sugar content to a minimum. 

baked oatmeal



Baked oatmeal is very versatile and you can easily substitute ingredients for things that you have on hand or if you just want to change things up.  

  • Use different spices. Instead of cinnamon try pumpkin pie spice, apple pie spice, cardamon, or ground ginger.
  • Substitute any type of nut/seed butter for peanut butter: almond butter, cashew butter, sunflower seed butter.
  • Add ⅓-½ cup of nuts or seeds: chopped walnuts, pecans, sliced almonds, pumpkin seeds, sunflower seeds. 

sliced baked oatmeal


Store covered in the fridge for up to 5 days. You can eat it cold or warmed up in the microwave. If it needs a little moisture, add a few tablespoons of non-dairy milk before heating it up. Try it with some sliced fresh fruit and a drizzle of peanut butter.

peanut butter banana baked oatmeal


More Easy Oatmeal Recipes to Try

Pumpkin Baked Oatmeal

Oatmeal Raisin Cookie Baked Oatmeal

Slow Cooker Banana Steel-Cut Oats

How to Make the Perfect Oatmeal

Banana Peanut Butter Baked Oatmeal

Prep Time15 minutes
Cook Time30 minutes
Total Time45 minutes
Course: Breakfast, Brunch
Cuisine: American
Keyword: banana, oatmeal, peanut butter
Servings: 6


  • 2 ripe medium bananas
  • 2 eggs
  • 2 cups old-fashioned oats (use certified gluten-free if you want to make it gluten-free)
  • 1/3 cup peanut butter
  • 1/4 cup maple syrup
  • 1/4 cup unsweetened almond milk
  • 1 tsp vanilla extract
  • 1 tsp ground cinnamon
  • 1 tsp baking powder
  • 1/4 tsp salt


  • Preheat oven to 375 degrees.
  • In a large bowl, mash up the bananas. Whisk in the eggs, maple syrup, peanut butter, almond milk, and vanilla extract.
  • Add the oats, cinnamon, baking powder, and salt and mix until everything is combined,
  • Pour the batter into an 8x8 inch baking dish that has been sprayed with cooking spray.
  • Bake for 30 minutes. Let cool for at least 10 minutes before cutting it.

Don’t forget to pin this recipe to your favorite Pinterest board!

baked oatmeal pin