Oh my gosh, let me tell you about my absolute favorite grab-and-go breakfast – these peanut butter banana oatmeal bars! They’ve saved my mornings more times than I can count when I’m rushing out the door. Packed with whole grains, natural sweetness from ripe bananas, and just enough peanut butter to feel indulgent (but still totally wholesome), these little squares are my secret weapon against hangry meltdowns. My kids go crazy for them too, which makes this mama very happy!

Table of Contents
Table of Contents
Why You’ll Love These Peanut Butter Banana Oatmeal Bars
Listen, these aren’t just any old breakfast bars – these peanut butter banana oatmeal bars are pure magic! Here’s why they’re always in my kitchen:
- Morning lifesaver: Ready in under an hour (most of that’s hands-off baking time!)
- Wholesome fuel: Oats, banana, and peanut butter give you lasting energy without the sugar crash
- Meal prep superstar: Make a batch Sunday and breakfast is DONE for the week
- Kid-approved: My picky eaters think they’re getting dessert for breakfast (shhh!)
- Customizable: Swap in different nut butters or add chocolate chips when you’re feeling fancy
Seriously, once you try these peanut butter banana oatmeal bars, you’ll wonder how you ever survived busy mornings without them! You can find more great recipes here.
Ingredients for Peanut Butter Banana Oatmeal Bars
Here’s everything you’ll need to make these delicious bars – and trust me, you probably have most of it in your pantry already!
- 2 cups old fashioned rolled oats (not instant!)
- 1 cup packed whole wheat flour
- 2 teaspoons ground cinnamon
- 1 teaspoon baking powder
- ¼ teaspoon kosher salt
- 1½ cups milk (I use unsweetened almond milk)
- 3 tablespoons honey (or more if you like it sweeter)
- 2 tablespoons peanut butter (I’m team creamy!)
- ½ cup unsweetened applesauce
- 1 large egg
- 1 teaspoon pure vanilla extract
- 1 medium banana, diced into small pieces

Ingredient Notes & Substitutions
No stress if you need to swap things! Almond butter works instead of peanut butter, maple syrup can replace honey, and regular flour works if you don’t have whole wheat. For vegan bars, use flax eggs and plant-based milk. Quick oats? They’ll work in a pinch, but old-fashioned give better texture!
How to Make Peanut Butter Banana Oatmeal Bars
Okay, let’s get baking! Don’t worry – this is seriously easy peasy. First, crank your oven to 375°F and grab that 8×8 pan. Give it a quick spritz with cooking spray so your bars pop right out later (learned that the hard way once!).
Now for the fun part! In one bowl, whisk together all your dry ingredients – the oats, flour, cinnamon, baking powder and salt. In another bigger bowl (trust me, you’ll need the space!), mix the wet stuff – milk, applesauce, egg, honey, peanut butter and vanilla. It’ll look kinda weird at first, but keep stirring!
Pour the dry mix into the wet bowl and stir just until combined – lumps are totally fine! Fold in those banana pieces gently (they’re the best surprise bites later). Count to 35 minutes while it bakes to golden perfection – you’ll know it’s done when a toothpick comes out clean and the edges pull away slightly. Let it cool before cutting or you’ll have a delicious mess!
Tips for Perfect Peanut Butter Banana Oatmeal Bars
My golden rules? Don’t overmix the batter (makes tough bars), chop bananas small so they distribute evenly, and test doneness in the center where it bakes slowest. If edges brown too fast, tent with foil. And yes, sneaking a warm corner piece is totally allowed!
Print
10 Nutritious Peanut Butter Banana Oatmeal Bars for Busy Mornings
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Total Time: 45 minutes
- Yield: 9 bars 1x
- Category: Breakfast
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Description
Healthy and delicious peanut butter banana oatmeal bars perfect for breakfast or a snack.
Ingredients
- 2 cups old fashioned rolled oats
- 1 cup whole wheat flour
- 2 teaspoons ground cinnamon
- 1 teaspoon baking powder
- ¼ teaspoon kosher salt
- 1 ½ cups milk (unsweetened vanilla almond or any kind)
- 3 tablespoons honey (or more for sweeter bars)
- 2 tablespoons peanut butter (creamy or crunchy)
- ½ cup unsweetened applesauce
- 1 large egg
- 1 teaspoon pure vanilla extract
- 1 medium banana (quartered and diced)
Instructions
- Preheat oven to 375°F. Lightly coat an 8×8 inch square pan with cooking spray.
- In a medium bowl, mix oats, whole wheat flour, cinnamon, baking powder, and salt.
- In a separate large bowl, combine milk, applesauce, egg, honey, peanut butter, and vanilla.
- Pour dry ingredients into the wet mixture and stir until combined. The batter will be very wet.
- Fold in the diced banana, then pour into the prepared baking pan.
- Bake for 35 minutes or until golden and a toothpick inserted in the center comes out clean.
- Cool, cut into bars, and serve.
Notes
- Store in an airtight container for up to 3 days.
- Freeze for longer storage.
- Adjust sweetness with extra honey if desired.
Nutrition
- Serving Size: 1 bar
- Calories: 180
- Sugar: 8g
- Sodium: 120mg
- Fat: 4g
- Saturated Fat: 1g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 4g
- Protein: 6g
- Cholesterol: 25mg
Serving & Storing Peanut Butter Banana Oatmeal Bars
Now here’s my favorite dilemma – eat these peanut butter banana oatmeal bars warm right out of the oven (that melty peanut butter smell is irresistible!) or chilled straight from the fridge? I honestly can’t decide! For storage, pop them in an airtight container – they’ll stay fresh for 3 days on the counter or up to a week in the fridge. Want to keep longer? These freeze beautifully! Just wrap individual bars in parchment paper and toss in a freezer bag for up to 3 months. Quick 30-second zap in the microwave and it’s like they’re fresh-baked again!

Peanut Butter Banana Oatmeal Bars FAQ
Got questions? I’ve got answers! Here are the things people ask me most about these peanut butter banana oatmeal bars:
Can I use quick oats instead of rolled oats?
Yes, but the texture will be softer. I prefer old-fashioned oats for their hearty chew – they hold up better in the bars!
How can I make these vegan?
Easy swaps! Use flax eggs (1 tbsp ground flax + 3 tbsp water per egg) and your favorite plant-based milk. Maple syrup works perfectly instead of honey too.
Why is my batter so wet?
Don’t worry – it’s supposed to be! The oats soak up moisture as it bakes. Just trust the process and resist adding extra flour.
Can I add chocolate chips?
Ohhh yes! Fold in ½ cup mini chocolate chips with the bananas. (My kids beg for this version!)

Nutritional Information
Each peanut butter banana oatmeal bar packs about 180 calories, with 4g of healthy fats, 30g of carbs (including 4g fiber!), and 6g of protein to keep you full. Values may vary slightly based on your specific ingredients – but hey, we’re focused on deliciousness here!
Rate & Share Your Peanut Butter Banana Oatmeal Bars
Did you make these peanut butter banana oatmeal bars? I’d love to hear how they turned out! Leave a comment below or tag me on Instagram – bonus points if you snapped a pic of your delicious creation! You can also follow along for more updates on Facebook.