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Blueberry Banana Baked Oatmeal

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Banana blueberry baked oatmeal is the ultimate healthy breakfast that tastes like you’re cheating. It’s almost like bread pudding for breakfast but it is made with nutritious whole grain oats and sweetened with maple syrup and a ton of fruit.

This is all the good things you put in a bowl of oatmeal plus some eggs to bind it all together. The eggs give it a firm structure. Firm enough that you can slice the oatmeal into squares but loose enough that it is still a bit like custard.

A 9 x 13 pan of baked oatmeal.

Creamy, fudgy, rich, indulgent custardy baked oatmeal. All that for only 156 calories. This is a great start to your morning.

What is banana blueberry baked oatmeal?

This baked oatmeal is a healthy breakfast casserole loaded with soluble fiber from the oatmeal and healthy protein from the eggs. It is:

  • Bursting with juicy blueberries and sweet, creamy bananas.
  • More of a bread pudding consistency than a spoonable bowl of oatmeal.
  • Quick and easy to make.
  • Healthy, wholesome, and hearty.

What this is NOT:  It is not a granola bar that you can pick up with your hands. You will need a fork or a spoon to eat this baked oatmeal casserole. If you’re looking for a quick grab and go snack, try our healthy banana blueberry muffins or our more indulgent and less healthy blueberry banana bread

What goes in banana blueberry baked oatmeal?

  • Oatmeal flakes. Use old fashioned rolled oats. Do not use instant oats.
  • Baking powder. It gives it a bit of lift and makes it lighter.
  • Spices. Cinnamon, nutmeg, and cardamom. The warm spices go perfectly with the blueberries and bananas
  • Salt. Salt enhances all the flavors.
  • Milk. You can substitute with non-dairy milk if you prefer.
  • Eggs. Gives structure and that custard-like texture to this baked oatmeal.
  • Maple syrup. We are using this sweet tree sap to keep things un-refined but don’t get us wrong. It isn’t health food, it’s simply a healthier choice.
  • Vanilla extract. Vanilla enhances the sweetness and makes the flavors pop.
  • Bananas. Use ripe bananas but not mushy ones.
  • Blueberries. You can use fresh or frozen blueberries. They get juicy and burst open when they cook. So good!
Close up of a slice of baked oatmeal.

How to make banana blueberry baked oatmeal.

This couldn’t come together faster. We mixed the dry and wet ingredients in separate bowls to make sure they get combined sufficiently.

But honestly, sometimes I just toss it all in the baking dish and stir it really well. If you do that, just make sure everything is very well mixed. A clump of the spices that didn’t get blended could ruin the bite. 

  1. Mix the dry ingredients in a bowl.
  2. Mix the wet ingredients in a separate bowl.
  3. Combine the wet and dry ingredients and stir in half of the fruit.
  4. Pour into the baking dish and top with more fruit.
  5. Bake!
collage of process photos showing how to make baked oatmeal.

What you will need.

This recipe makes a generous portion. You will need a 13 x 9-inch baking dish. It’s perfect for a family brunch or to bake ahead of time so you can warm up a slice in the mornings.

Do you want to freeze this baked oatmeal?

You can freeze this just fine. Let it cool down then slice it into individual portions and place them in freezer-safe containers.

Tips for success:

  • Don’t mix this up the night before. If it sits overnight before you bake it, the oats will soak up all the liquid and it won’t have that perfect custardy texture.
  • Use old fashioned rolled oats. Not instant oats. Not oat groats or steel-cut oats either.
  • Take it out of the oven when the edges are set and the center still jiggles a bit. 
  • Grease the baking dish before you put the mixture in. 
Two serving plates with slices of baked oatmeal.

Some Other Recipes We Are Sure You Will Love:

  • These loaded granola cookies are a favorite! They are packed with dried blueberries, pecans, coconut, white chocolate, and oatmeal. They are better than granola bars!
  • Our banana blueberry muffins with crumb topping are really more like a dessert than a breakfast. But that doesn’t stop me from grabbing them for a morning snack. 🙂 
  • This blueberry buckle is another favorite way to bake with blueberries. It is LOADED with that juicy fruit and topped with a delicious streusel. 

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A 9 x 13 pan of baked oatmeal.

Blueberry Banana Baked Oatmeal

Oatmeal turns into a healthy breakfast custard that is packed with juicy blueberries and creamy bananas. This recipe makes a generous amount and is perfect for a larger group but it also freezes well if you have leftovers.
4.60 from 5 votes
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Prep Time: 10 minutes
Cook Time: 35 minutes
Total Time: 45 minutes
Servings: 12 to 15 servings
Calories: 156kcal
Author: Dahn Boquist


  • 3 cups rolled oatmeal flakes
  • 1-1/2 teaspoons baking powder
  • 2 teaspoons ground cinnamon
  • 1/2 teaspoon ground nutmeg
  • 1/4 teaspoon cardamom
  • 3/4 teaspoon salt
  • 2-1/4 cups milk
  • 3 eggs
  • 1/2 cup maple syrup
  • 2 teaspoons vanilla extract
  • 2 to 3 large bananas peeled and sliced
  • 2 cups fresh or frozen blueberries


  • Preheat the oven to 350°F.
  • Grease a 9 x 13-inch square pan with nonstick spray or line it with parchment paper. 
  • Mix the oatmeal flakes, baking powder, cinnamon, nutmeg, cardamom and salt in a bowl. 
  • In a separate bowl beat the milk, eggs, maple syrup, and vanilla. Stir it into the oatmeal mixture. 
  • Stir in half of the bananas and blueberries. Spread into the baking pan. 
  • Top with the remaining banana and blueberries.
  • Bake for 35 to 40 minutes until the edges are set and the middle is still slightly jiggly. It will continue to cook when you take it out of the oven. 
  • Cool for 5 minutes then slice and serve. 


Do not use instant oats, they soak up more moisture and the baked oatmeal will turn out dry.



Serving: 1 | Calories: 156kcal | Carbohydrates: 27g | Protein: 5g | Fat: 3g | Saturated Fat: 2g | Polyunsaturated Fat: 2g | Cholesterol: 53mg | Sodium: 277mg | Fiber: 2g | Sugar: 15g

Dahn Boquist

Dahn is a retired nurse, recipe creator, home cook, baker, and self-proclaimed foodie. She loves creating in the kitchen and cooking for family and friends. She lives in Washington State with her husband and dog. When she isn't cooking or baking, you can usually find her spending time with her grandchildren or exploring the beautiful Pacific Northwest.

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Recipe Rating

Jeff the Chef

Friday 3rd of January 2020

I eat oatmeal every morning during the winter! But I've never baked oatmeal before. Thanks for the recipe!

Dahn Boquist

Friday 3rd of January 2020

Give this one a try Jeff, it will warm your bones :)

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