Baked Banana Oatmeal

This easy Baked Banana Oatmeal is a KERF classic! It’s great to make on prep day and reheat throughout the week. This version baked in a pie dish features an optional sugar-free peanut butter cream frosting! 

Baked Banana Oatmeal

This great recipe is one of the best ways to enjoy oats! Simple to make, you can have it ready for a healthy breakfast in under 30 minutes. Mix the ingredients together, place in oven, go get showered for the day, and breakfast will be hot and ready for you.

My love for baked oatmeal goes back to 2008, and I’ve been making different variations for years. (See them linked at the bottom of this post.) Since stove-top oatmeal in a bowl is hard for toddlers to eat, this is one of the best ways for Birch to enjoy oatmeal. It’s a fabulous toddler finger food cut into bite-size pieces. Mazen likes it slathered with peanut butter.

baked banana oatmeal slice


When cut into six servings, each base recipe serving is about 225 calories, 10 grams of protein, 5 grams of fiber, 5 grams of sugar, and 5 grams of fat. (Note this is with cow’s milk, so almond milk will bring the protein down a little). The 5 grams of sugar is coming from natural sweeteners (banana and milk) rather than added sugar. You’re also getting 56% of daily calcium and 12% of daily iron. You can also make it gluten free by using gluten free oats. Add in chia seeds, nuts of your choice, or other fruits for added nutrition.


Make sure you use very ripe bananas that have some brown spots, like on their way to banana bread status, so you’ll get plenty of natural sweetness. You can add a few tablespoons of brown sugar to the dry ingredients if you would prefer more of a sweet taste.


I do like to add a little brown sugar broiled on top at the end so it gets nice and bubbly. Mix in chopped nuts, dried fruit, chocolate chips, and more! Or add this peanut butter cream frosting made with yogurt, PB2, and milk for a nice extra layer of flavor!

baked banana oatmeal far

How To Make Baked Banana Oatmeal

Jump to Recipe

Prepare wet and dry ingredients

Mash ripe banana until it’s nice and soft. Beat your egg. Mix in milk and vanilla extract. You can use cow’s milk or almond milk. Mix dry ingredients together in a large bowl (rolled oats, baking powder, cinnamon, salt.)

Pour wet ingredients into the dry ones

Mix well!

Pour into greased pie dish

Top with more banana slices


Pop into a 375 degree oven for about 26 minutes, until golden brown on edges

Optional: Brown sugar broil

After 26 minutes, increase heat to broil, sprinkle oatmeal with 1 heaping tbsp brown sugar and broil for 3-4 minutes.

Serve warm or store in the fridge and reheat

Different ways to adapt the recipe:

  • Bake in 8″ square baking pan lined with parchment for easy lift out and thinner slices
  • Use a smaller baking dish for more “loaf” sized slices (see the Pumpkin recipe below)
  • Make in muffin tin for easy cups (great to freeze!)
  • Double the recipe and use a bigger pan to feed a crowd!

How To Serve Baked Banana Oatmeal

Peanut Butter Frosting

This “frosting” is my new jam. It’s a mix of plain Greek yogurt, PB2 peanut butter powder, and milk that I mixed until I got a thick-ish consistency and then piped onto the pie. The topping is not sweet so add some sugar if you want more of a dessert frosting!

Baked Banana Oatmeal with Peanut Butter “Frosting”

This classic baked banana oatmeal has been a favorite for years in our house. It’s super simple to mix together and pop in the oven while you get ready. An optional brown sugar broil adds a little caramelization and a peanut butter cream “frosting” has no sugar.


  • 2 cups rolled oats
  • 2 ripe bananas 1 mashed and 1 sliced
  • 1.5 cups milk of your choice
  • 1 egg beat
  • 1 tsp baking powder
  • 1/2 tsp kosher salt
  • 1 tsp vanilla
  • 1/4 tsp cinnamon
  • 1 tbsp brown sugar (optional)

For The Peanut Butter Frosting

  • 1/4 cup plain Greek yogurt
  • 2 tbsp powdered peanut butter
  • 2 tbsp milk


  • Preheat oven to 375 degrees.

  • Combine the dry ingredients in a large bowl (oats, salt, cinnamon, baking powder).

  • Combine the wet ingredients (egg, 1 mashed banana, milk, vanilla).

  • Pour the wet into the dry and mix well.

  • Spray a pie dish with cooking spray or grease with butter. Pour oat mixture in.

  • Top with sliced bananas.

  • Bake for about 26 minutes.

  • After 26 minutes, increase heat to broil, sprinkle oatmeal with 1 heaping tbsp brown sugar and broil for 3-4 minutes.

For The Peanut Butter Frosting

  • Mix yogurt, powdered peanut butter and milk until you have desired consistency. You might have to add a little more or less than the recipe calls for – just keep going until you have something you can pipe. You can also add some cane sugar if you’d like!

  • Once the frosting consistency is to your liking, scoop into a piping bag or ziplock and squeeze onto oatmeal pie.

Baked banana oatmeal with peanut butter frosting

More Baked Oatmeal Variations!

Egg Nog

eggnog baked oatmeal


Pumpkin baked oatmeal

Apple Walnut

apple walnut baked oatmeal

Coffee Almond

coffee almond baked oatmeal

Strawberry Basil Breakfast Pie

strawberry basil baked oatmeal

Cinnamon Raisin Baked Oatmeal Muffins