Baked Peanut Butter Banana Oatmeal
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This baked peanut butter banana oatmeal is the ideal breakfast for busy mornings when you still want something that tastes like dessert. Made with just 9 everyday ingredients, it comes together in one bowl and bakes into something genuinely comforting. You get a creamy, chewy oatmeal bake that keeps you full and actually tastes better than the version from most fast food breakfast menus.

Why This Recipe Works
- Microwaving the peanut butter first creates a smooth, pourable base that binds everything together without any extra effort.
- Ripe bananas provide natural sweetness and moisture, so there is no need for added oil or excessive sugar.
- Baking powder lightens the oats up so you get a cake-like crumb instead of dense, soggy bars.
- Everything mixes in one bowl and bakes in one pan, which means almost zero cleanup afterward.

Ingredients
- Old Fashioned Oats. They form the hearty base of this bake and provide sustained energy to get you through the morning.
- Ripe Bananas. They add natural sweetness and moisture while creating a creamy texture that replaces the need for added fats.
- Baking Powder. It lifts the oats during baking so the final result stays light and cake-like instead of dense.
- Salt. It balances all the sweetness from the peanut butter and honey so every bite tastes rounded instead of cloying.
- Peanut Butter. It brings protein and healthy fats while tying all the other ingredients together.
- Egg. It adds extra protein and helps the bake set properly so each slice holds its shape when you cut it.
- Unsweetened Vanilla Almond Milk. It provides the liquid base while keeping the recipe lighter than using dairy milk.
- Honey. It adds a touch of natural sweetness that complements the bananas without overpowering them.
- Vanilla Extract. It rounds out all the flavors and makes the whole bake taste more like dessert than breakfast.
Why You’ll Love This Recipe
- Each serving delivers 5 grams of protein to help you stay full until lunch.
- The peanut butter banana combination is a classic flavor pairing that feels indulgent but works in your meal plan.
- Oats and bananas are two of the most budget-friendly ingredients you will find at any grocery store.
- It stores well for meal prep, making weekday mornings about as easy as it gets.
- You can eat it for breakfast or honestly just about any other time of day too.
- The whole recipe bakes in a single 8×8 pan, so you are dealing with minimal dishes.

What To Serve This Recipe With
- Fresh banana slices
- Greek yogurt
- Drizzle of honey or maple syrup
- Mixed berries
- Extra peanut butter
If you want to switch up your breakfast routine, this Banana Chia Seed Pudding is another great option to try.
Recipe Variations
- Almond Butter Swap – Use almond butter or cashew butter instead of peanut butter for a different nutty flavor.
- Pancake Bread Swap – If you want something with a similar flavor profile, try this Protein Pancake Bread for a fluffy high-protein breakfast.
- Gluten-Free Version – Swap in certified gluten-free old fashioned oats to make the entire recipe safe for gluten-sensitive diets.
- Extra Protein Boost – Stir in a scoop of vanilla or peanut butter protein powder and add an extra splash of almond milk since powders absorb moisture.
- Chocolate Chip – Fold in a handful of chocolate chips before baking for something closer to a dessert bar.
- Dairy-Free – Replace the honey with maple syrup to make this entirely dairy-free.\/li>
- Cinnamon Roll Vibe – Add a dash of cinnamon to the mix and a drizzle of cream cheese icing on top for something closer to Protein Cinnamon Rolls for breakfast.\/li>

Tips
-
Storage
Cover the baking dish or slice portions and store them in the refrigerator for up to 5 days. -
Reheating
Microwave individual slices for 30 seconds to bring back that fresh-out-the-oven texture. -
Ingredient Swaps
Use maple syrup instead of honey for a dairy-free version, or swap peanut butter for almond or cashew butter. -
Meal Prep
Cut into squares and store in an airtight container for grab-and-go breakfasts all week long. -
Banana Ripeness
The riper the bananas, the sweeter your bake will turn out. Look for ones with brown spots on the peel. If you want another banana breakfast to try, this Protein Banana Bread is a solid option too.
FAQs
-
Can I use quick oats instead of old fashioned oats?
Quick oats work but the texture will be softer and more mushy since they are cut finer. Old fashioned oats give you a chewier, heartier bake that holds its shape better when sliced. If you like oats in cookie form, this Banana Oatmeal Protein Cookies recipe is another solid option. -
Do I have to use bananas for the banana flavor?
The bananas in this recipe do more than add flavor, they provide moisture and natural sweetness too. If you want extra banana taste you can add a teaspoon of banana extract, but skipping them entirely will change the texture. -
Is this recipe gluten-free?
The base ingredients are naturally gluten-free, but regular oats can be cross-contaminated with wheat during processing. Use certified gluten-free oats to keep it safe for gluten-sensitive diets. -
Can I make this ahead of time?
Yes, mix everything the night before and let it sit in the baking dish overnight. In the morning just pop it in the oven and cut your bake time back by about 10 minutes since the mixture will already be warm. -
How do I know when it is done baking?
Insert a toothpick into the center and if it comes out clean or with just a few moist crumbs, it is ready. The edges should look slightly set and lightly golden around the 40-minute mark.
Equipment Needed
- OXO Good Grips 8×8 Glass Baking Dish
- Reynolds Stay Flat Parchment Paper
- Large Mixing Bowl
- Microwave
- Fork for mashing
Recipe

Baked Peanut Butter Banana Oatmeal
Ingredients
Directions
- Take out a large bowl and add your peanut butter in it.
- MIcrowave it for 30 seconds to soften it if necessary.
- Add your two bananas and mash them using a fork.
- Add the rest of your wet ingredients and mix until well combined.
- Add all of the dry ingredients and mix until well combined.
- Take out an 8×8 baking dish and line it with parchment paper if needed.
- Add your mixture to the baking dish.
- Bake uncovered on 350F for 40-45 minutes, checking with a toothpick near the end to ensure it comes out clean.
- Drizzle with melted peanut butter and top with sliced bananas
- Let it cool for about 5-10 minutes before cutting into it.
