Baked Banana Oatmeal

banana baked oatmeal slice with peanut butter on a plate.

Course: Breakfast

Cuisine: American

Keyword: baked banana oatmeal

Prep Time: 10

Cook Time: 35

Total Time: 45

Servings:

Calories: 301kcal

Author: Megan Gilmore

The next time you need a meal prep breakfast idea, try this banana baked oatmeal recipe. It has the perfect texture (not mushy or gummy!) and tastes like a slice of banana bread, without using refined sugar or oil.

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Ingredients

2 large bananas (see notes)
1 cup soy milk (or milk of choice)
2 large eggs
¼ cup maple syrup
2 cups old-fashioned rolled oats
2 tablespoons ground flax seeds (or chia seeds)
2 teaspoons ground cinnamon
1 teaspoon baking powder
¼ teaspoon fine sea salt
½ cup chopped walnuts , plus more for topping

Instructions

Preheat the oven to 350ºF and grease an 8-inch square baking dish. Press a piece of parchment paper into the bottom of the pan for easier removal later. In a large bowl, peel and mash the ripe bananas until they look relatively smooth. Add in the milk, eggs, and maple syrup, and stir well.
Add in the oats, ground flax seeds, cinnamon, baking powder, and salt, and stir again. Fold in the chopped walnuts, then transfer the mixture to the prepared baking dish. Sprinkle a few extra walnuts on top, if desired.
Bake at 350ºF until the edges are golden and the top looks firm in the center, about 35 minutes. Remove from the oven and let it cool for at least 15 minutes before slicing and serving. The texture will be slightly gummy in the center while it's hot from the oven, but it firms up even more as it cools, making it perfect for meal prep.
Serve warm with a drizzle of peanut butter on top, or with fresh banana slices or berries. Leftovers can be stored in an airtight container in the fridge for up to 5 days.

Notes

Nutrition information is for 1 of 6 slices, using unsweetened soy milk. This information is automatically calculated and is just an estimate, not a guarantee.

Update Note: This recipe was updated in August 2025 to add eggs for more protein and structure. If you prefer the original recipe, omit the eggs and use only 3/4 cup milk.

Use More Bananas: I tested this recipe with 3 bananas and found that you need less milk and maple syrup in that case. To use 3 bananas, add only 3/4 cup milk and 2 tablespoons of maple syrup. Then mix and bake as directed.

Gluten-Free Note: Oats are naturally gluten-free, but can be contaminated during the manufacturing process. Shop for a package that is labeled "certified gluten-free" if you need a gluten-free recipe.

Vegan Option: Omit the eggs and reduce the soy milk to only 3/4 cup.

Nutrition