Banana Peanut Butter Baked Oatmeal is a vegan, dairy-free, egg-free recipe that turns simple pantry staples into a delicious, hearty, and filling dish perfect for breakfast or even dessert.
Naturally refined sugar-free, this cozy bake tastes indulgent while still being wholesome enough to fuel your day.
Banana peanut butter baked oatmeal is my ultimate comfort combo because I can never resist bananas and peanut butter together.
I blend them into a banana peanut butter smoothie all the time and even bake them into a cozy banana peanut butter cake.
Oatmeal is already on heavy rotation in my kitchen, from banana overnight oats to oat cookies, and banana blackberry oatmeal muffins, so this baked version was love at first bite.
It bakes up soft, cozy, and lightly sweet with a rich peanut butter flavor, and I love that it's quick to make and perfect for meal prep. Enjoy it warm or cold, it truly feels like dessert for breakfast.
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🍌Ingredients
- Bananas: The riper, the better; they naturally sweeten the oatmeal.
- Rolled oats: Use rolled oats for the best hearty texture.
- Peanut butter: Natural, runny peanut butter works best.
- Walnuts: Add a nice crunch and nutty bite.
- Dairy-free milk: I used oat milk, but any plant-based milk works.
- Ground flaxseed: Helps bind the oatmeal.
- Maple syrup: Adds gentle, natural sweetness.
- Vanilla extract: Boosts flavor and warmth.
- Cinnamon & Nutmeg: Add cozy spice.
- Baking Soda: Helps the oatmeal bake up tender.
- Salt: Balances the sweetness.
As always, you can find the full recipe with a list of ingredients with measurements in a printable recipe card at the end of this post.
🥣How To Make Banana Peanut Butter Baked Oatmeal
Step 1: Preheat the oven to 350°F / 180°C and lightly grease an 8-inch square baking pan with neutral oil. Mash the bananas with a fork until smooth (you'll need 2 cups). Add the milk, peanut butter, maple syrup, and vanilla to the mashed bananas and mix until well combined.
Step 2: In a separate bowl, stir together the rolled oats, walnuts, ground flaxseed, cinnamon, nutmeg, baking soda, and salt. Add the dry mixture to the wet ingredients and mix until combined.
Step 3: Pour the batter into the pan and bake for 40 minutes, until set and lightly golden.
Step 4: Let cool slightly, then enjoy warm or cold with extra peanut butter or maple syrup on top.
📋Variations
- Add chocolate chips for a sweeter, dessert-like version.
- Use cashew butter it almond butter instead of peanut butter.
- Stir in berries like blueberries or raspberries for a fresh touch.
- Swap walnuts with pecans or almonds.
- Top with banana slices before baking for extra sweetness.
- Mix in shredded coconut for a tropical twist.
- Add a pinch of ginger or cardamom for a subtle spice kick.
💡Marinela's Tips
- Use very ripe bananas for maximum sweetness and moisture-brown spots are a good thing.
- Let it cool slightly before slicing to help it set and hold its shape.
❓Frequently Asked Questions (FAQ's)
Yes! Swap peanut butter with tahini or sunflower seed butter for a nut-free version.
Yes! This baked oatmeal is naturally gluten-free. Just be sure to use certified gluten-free rolled oats.
Store cooled baked oatmeal in an airtight container in the fridge for up to 4 days. For longer storage, slice and wrap portions in foil or plastic, then freeze for up to 3 months.
📖 Recipe
Vegan Banana Peanut Butter Baked Oatmeal
Equipment
- 1 8-inch square baking pan lightly greased
- 2 Mixing bowls
Ingredients
Wet ingredients
- 2 cups bananas mashed
- ¾ cups oat milk or any plant-based milk
- ¼ cup natural peanut butter
- ¼ cup pure maple syrup
- 1 teaspoon pure vanilla extract
Dry ingredients
- 2 cups rolled oats
- ½ cup walnuts chopped
- 1 tablespoon ground flaxseed (flaxseed meal)
- 1 teaspoon ground cinnamon
- ¼ teaspoon ground nutmeg
- 1 teaspoon baking soda
- ¼ teaspoon salt
Instructions
- Preheat oven to 350°F / 180°C and grease an 8-inch square baking pan. Mash the bananas in a bowl. Add milk, peanut butter, maple syrup, and vanilla to the bananas. Mix until smooth.2 cups bananas, ¾ cups oat milk, ¼ cup natural peanut butter, ¼ cup pure maple syrup, 1 teaspoon pure vanilla extract
- In another bowl, combine oats, walnuts, flaxseed, cinnamon, nutmeg, baking soda, and salt.2 cups rolled oats, ½ cup walnuts, 1 tablespoon ground flaxseed (flaxseed meal), 1 teaspoon ground cinnamon, ¼ teaspoon ground nutmeg, 1 teaspoon baking soda, ¼ teaspoon salt
- Stir the dry ingredients into the wet mixture until just combined. Pour into the prepared pan.
- Bake for 40 minutes, until set and lightly golden. Let cool slightly before slicing. Serve warm or cold, optionally drizzled with peanut butter or maple syrup.
Notes
- Sweetness tip: The sweetness depends on the bananas, so use ripe or overripe ones for the best flavor. This baked oatmeal isn't overly sweet. Add 1-2 extra tablespoons of maple syrup if you prefer it sweeter.
- Nut-free option: You can omit the walnuts entirely for a nut-free vegan version.
- Storage: Keep in an airtight container in the fridge for up to 4 days, or freeze slices for up to 3 months.
Nutrition
If you try this banana peanut butter baked oatmeal, let me know! Leave a comment, rate it, and don't forget to tag a photo @go_eatgreen on Instagram.
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Andrea says
my kind of breakfast! soooo good! will make again 🙂
Marinela says
I'm so glad you like it, Andrea. Thank you for commenting!
Choclette says
Your banana oatmeal sounds delicious and makes a nice change to banana bread. I'm a big fan of banana and walnuts together.
Marinela says
Me too, one of my favorite-timeless combo 🙂 I'm glad you like it, Choclette. Thank you for sharing your feedback with us!