Soft, chewy Peanut Butter Banana Oatmeal Breakfast Bars that are perfect to make ahead and grab for a quick breakfast or snack. They’re easy to prepare, freezer-friendly, and naturally sweetened with bananas and honey.
Reader Love
These turned out SO good!! I used mixed nut butter instead of peanut butter and added a splash of vanilla. They’re excellent and I’ll make them again for sure!
–
Note from Danielle
This recipe first appeared in February 2019 and was re-tested and updated in 2026. The changes were minor but improved texture and reliability across different banana ripeness levels.
Peanut butter and banana is a timeless flavor pairing — think of a classic peanut butter and banana sandwich. These bars capture that nostalgic flavor while adding oats for a filling, fiber-rich breakfast option.
👉 In this post you’ll find detailed tips and notes gathered during testing to help you make the best Peanut Butter Banana Oatmeal Breakfast Bars.
🖨️ For a concise printable recipe card with ingredients and step-by-step instructions, see the recipe card below or use your browser print function.
🙋♀️ Frequently asked questions and storage tips are included after the recipe card.
Recipe Overview
Total Time: 35 minutes
Difficulty: Easy
Method: Oven-baked
Prep: Make-ahead friendly (freezer-safe)
Ingredients in these Banana Oatmeal Breakfast Bars:
If you usually have bananas on hand, the rest of the ingredients are common pantry staples. This section explains what each ingredient contributes and simple substitution ideas.
Here’s a quick rundown:
- Bananas – The main sweetener and binder. They don’t need to be overly ripe; a range of ripeness works.
- Rolled oats – Use old-fashioned rolled oats, not instant, for the best texture. Choose certified gluten-free oats if needed.
- Peanut butter – Adds flavor and richness. Other nut butters likely work but were not tested here.
- Honey – Natural sweetener that complements peanut butter and banana. Maple syrup can be used but yields a different flavor.
- Milk – A couple tablespoons of dairy or plant-based milk to help bind the mixture.
- Baking powder – Adds a light lift so the bars aren’t too dense.
- Cinnamon – Warm spice that enhances the banana and peanut butter notes.
- Salt – Balances sweetness and highlights flavor.
Equipment needed to make these banana breakfast bars:
Minimal equipment is required. A mixing bowl, a rubber spatula or spoon, and an 8×8 inch baking pan are all you need. Lining the pan with parchment paper makes lifting and cleanup simple.
How to make these Peanut Butter Oatmeal Banana Breakfast Bars:
This is a very straightforward recipe: mash bananas, combine with oats, peanut butter and the remaining ingredients, spread into a pan and bake.
Start by lining an 8×8 baking pan with parchment paper for easy removal. Mash the bananas well in a medium bowl until smooth. Add the rolled oats, peanut butter, honey, milk, cinnamon, baking powder, and salt. Stir until everything is evenly combined.
Transfer the mixture to the prepared pan and use a spatula to press it into an even layer. If desired, top with sliced banana before baking — the slices soften and caramelize slightly in the oven and add a pretty finish.
Bake at 375°F (190°C) for about 23–26 minutes, or until a toothpick in the center comes out clean. Let the pan rest for 5–10 minutes, then lift the slab out using the parchment and place on a cutting board. Cool a few minutes more if needed, then cut into 8 bars. Optionally drizzle with a little melted peanut butter before serving.
If you like this…
If you enjoy these bars, you may also like other baked oatmeal recipes that use banana and oats for a hearty breakfast option.
Ways to customize this recipe:
These bars are very adaptable. Try any of the following ideas to change up flavor and texture:
- Swap peanut butter for almond, cashew, or mixed nut butter.
- Add chocolate chips for extra sweetness.
- Stir in chia seeds, ground flax, or chopped nuts for added nutrition and crunch.
- Serve with Greek yogurt, a drizzle of additional nut butter, cottage cheese, or a smear of jam.
How to meal prep these PB Banana Oatmeal Bars:
These bars store well and are ideal for weekday breakfasts or snacks. Pair one with a hard-boiled egg or a serving of yogurt for a balanced meal.
Advance prep options:
- Fridge: Store in an airtight container or individually wrapped on the counter or in the refrigerator for up to 5 days.
- Freezer: Freeze individual bars in a freezer-safe bag for 3–6 months for best quality. Thaw in the refrigerator overnight or at room temperature for about an hour.
How to store Banana Oatmeal Breakfast Bars:
Store bars in an airtight container at room temperature or in the fridge for up to 5 days. They may begin to firm or stale slightly around day four, but they remain safe to eat.
Are these Banana Oatmeal Breakfast Bars freezer friendly?
Yes. During testing, frozen bars thawed and tasted nearly identical to fresh ones. Two convenient thawing methods:
- Overnight thaw: Move a frozen bar to the refrigerator the night before and enjoy it the next morning.
- Quick counter thaw: Leave a frozen bar on the counter for about an hour before eating; it softens enough to be enjoyable.
Frequently Asked Questions
Can I swap the peanut butter for another nut butter?
Yes — almond, cashew, or mixed nut butters should work. The texture and flavor will vary slightly, but the bars should hold together and taste delicious.
Can I swap the honey for another sweetener?
Maple syrup can be used instead of honey, but it will change the flavor profile. Honey pairs particularly well with peanut butter and banana in this recipe.