Peanut Butter Banana Oat Bars

Featured in: Warm Seasonal Bakes

These peanut butter banana oat bars offer a chewy, wholesome snack option that’s ready in minutes. Combining ripe bananas, creamy peanut butter, and hearty oats, the mixture is pressed into a pan and chilled until firm—no baking required. Optional mix-ins like nuts or chocolate chips add texture and flavor. Ideal for quick energy on the go, these bars store well in the fridge and are versatile enough to suit vegan preferences by swapping honey for maple syrup and choosing dairy-free chips.

Updated on Tue, 23 Dec 2025 14:38:00 GMT
Golden square of peanut butter banana oat bars, thick and studded with chocolate chips. Pin It
Golden square of peanut butter banana oat bars, thick and studded with chocolate chips. | lushkettle.com

I discovered these bars on a chaotic Wednesday morning when my usual breakfast routine fell apart—I had overripe bananas on the counter, a half-empty jar of peanut butter, and exactly ten minutes before heading out the door. What emerged from that kitchen scramble was something so satisfying that I've been making them ever since, now without the panic. They're the kind of snack that tastes indulgent but doesn't require turning on the oven, which feels like a small miracle when you're juggling a busy day.

My friend Sarah brought these to a hiking trip and everyone crowded around her backpack like they'd spotted treasure—turns out homemade snack bars beat store-bought every time, especially when you can taste actual fruit and nuts instead of mystery binders. She made a double batch after that, and now they're what people request when they know she's packing provisions.

Ingredients

  • Ripe bananas: They should be spotted and soft enough that mashing them takes almost no effort—this is where the natural sweetness comes from, so don't skip the ripeness.
  • Creamy peanut butter: Whatever kind you love works here; the only rule is it should be smooth enough to mix easily without lumps fighting back.
  • Honey or maple syrup: This binds everything together and adds a gentle sweetness that lets the peanut butter shine.
  • Vanilla extract: A small splash that makes people wonder what the secret ingredient is.
  • Old-fashioned rolled oats: Use the thick kind, not instant oats—they give you that satisfying chew.
  • Salt: A tiny amount that enhances every flavor without making things taste salty.
  • Ground cinnamon: Warm spice that tastes like fall no matter what season it is.
  • Walnuts or pecans: Optional, but they add a little crunch and keep things interesting.
  • Mini chocolate chips: Also optional, but there's something about them that makes the whole thing feel more like a treat.

Instructions

Set up your pan:
Line your square pan with parchment paper, making sure it drapes over the edges so you can pull the whole thing out later without wrestling with it. This small step saves so much frustration at the end.
Mash the bananas:
Break them down until they're mostly smooth, though a few tiny lumps won't hurt. You're aiming for soft banana paste, not baby food.
Mix the wet team:
Combine the bananas with peanut butter, honey, and vanilla, stirring until everything is evenly distributed and no streaks of peanut butter hide in the corners. The mixture should feel creamy and come together smoothly.
Bring in the oats:
Add the oats, salt, cinnamon, and any mix-ins you're using, then stir everything until the dry ingredients are coated and the whole mixture feels like one cohesive thing. Don't overstir—just until combined.
Press into the pan:
Transfer the mixture to your lined pan and press it down firmly and evenly using the back of a spoon or spatula, making sure you get into the corners. Firm pressing now means clean bars later, not crumbly bits.
Chill until set:
Refrigerate for at least an hour until the bars feel firm to the touch and hold their shape when you press them. You can leave them overnight without any problems.
Cut and store:
Use the parchment overhang to lift the whole block out, then slice into 12 bars using a sharp knife, wiping it clean between cuts for neat edges. Store them in an airtight container in the fridge where they'll keep for up to a week.
A close-up of Peanut Butter Banana Oat Bars, showing delightful texture and perfect layers. Pin It
A close-up of Peanut Butter Banana Oat Bars, showing delightful texture and perfect layers. | lushkettle.com

These bars became my go-to move for potlucks because they look homemade but take almost no time, and people always ask for the recipe thinking there's some elaborate secret involved. There's something quietly satisfying about handing someone a snack you made without any stress.

Make Them Completely Your Own

Once you make these once, you'll start seeing them as a base for whatever's happening in your kitchen that week. Swap out the chocolate chips for dried cranberries or coconut flakes, use almond butter if peanut butter isn't your thing, or skip the nuts entirely if allergies are a concern. The core recipe is flexible enough to bend around your pantry and your preferences.

Why No-Bake Snacks Win

There's something liberating about making something delicious without heating up your kitchen or watching the clock for a timer to go off. No-bake treats sit somewhere between cooking and assembly, which means less thinking and more time actually enjoying what you've made.

Smart Storage and Serving Ideas

These bars are built for real life—they travel in lunch boxes without crumbling, they don't melt if you forget them on the counter for an hour, and they taste just as good on day five as they do fresh. Wrap individual bars in parchment or foil if you're meal prepping, or keep them in the fridge in a container for grabbing whenever you need an afternoon boost.

  • Wrap bars individually in parchment paper for grab-and-go mornings or packed lunches.
  • They keep for up to a week in the fridge, though they rarely last that long.
  • For a vegan version, just swap maple syrup for honey and use dairy-free chocolate chips if you're adding those.
Delicious Peanut Butter Banana Oat Bars, offering a satisfying, no-bake energy boost. Pin It
Delicious Peanut Butter Banana Oat Bars, offering a satisfying, no-bake energy boost. | lushkettle.com

These bars prove that the best snacks aren't always the most complicated ones—sometimes they're just good ingredients combined in a way that actually makes sense. Keep a batch in your fridge and you'll find yourself reaching for them when you need something real and satisfying.

Recipe Questions & Answers

Can I substitute peanut butter with other nut butters?

Yes, almond or sunflower seed butter can be used as alternatives to peanut butter, altering the flavor slightly.

How long should the bars chill before cutting?

Refrigerate for at least 1 hour until the bars are firm enough to slice cleanly.

Are these bars suitable for a vegan diet?

By replacing honey with maple syrup and using dairy-free chocolate chips, these bars can be made vegan-friendly.

Can I add dried fruits to the bars?

Dried cranberries or raisins can be mixed in for additional flavor and texture.

What is the best way to store these bars?

Store the bars in an airtight container in the refrigerator for up to one week to maintain freshness.

Peanut Butter Banana Oat Bars

Chewy bars with creamy peanut butter, ripe banana, and hearty oats, perfect for a quick energy boost.

Time to Prep
10 mins
0
Full Prep Time
10 mins
Created By Samantha Reeves


Skill Level Easy

Culinary Tradition American

Portion 12 Serving Size

Dietary Details Meat-Free, No Dairy

What You Need

Wet Ingredients

01 2 large ripe bananas, mashed
02 1/2 cup creamy peanut butter
03 1/4 cup honey or maple syrup
04 1 teaspoon vanilla extract

Dry Ingredients

01 2 cups old-fashioned rolled oats
02 1/4 cup chopped walnuts or pecans (optional)
03 1/4 cup mini chocolate chips (optional)
04 1/4 teaspoon salt
05 1/2 teaspoon ground cinnamon

Steps

Step 01

Prepare Pan: Line an 8x8-inch square baking pan with parchment paper, leaving an overhang for easy removal.

Step 02

Mash Bananas: In a large bowl, mash the bananas until smooth.

Step 03

Combine Wet Ingredients: Add peanut butter, honey or maple syrup, and vanilla extract to the mashed bananas. Stir until thoroughly combined.

Step 04

Add Dry Ingredients: Incorporate oats, salt, cinnamon, and any optional nuts or chocolate chips. Mix until evenly distributed.

Step 05

Press Mixture into Pan: Transfer the mixture into the prepared pan and press firmly and evenly using the back of a spoon or spatula.

Step 06

Chill Bars: Refrigerate for at least 1 hour or until firm to the touch.

Step 07

Slice and Store: Lift bars out using the parchment overhang and cut into 12 bars. Store in an airtight container in the refrigerator for up to one week.

Tools You'll Need

  • Mixing bowl
  • Masher or fork
  • Spatula
  • 8x8 inch square baking pan
  • Parchment paper
  • Knife

Allergy Info

Review every ingredient for allergens and reach out to your doctor with concerns.
  • Contains peanuts and may contain tree nuts if walnuts or pecans are used.
  • Contains oats; ensure gluten-free oats for gluten sensitivity.
  • Contains honey, not recommended for infants under one year.

Nutrition Info (per portion)

Details offered for informational purposes, not as a substitute for professional health guidance.
  • Calories: 160
  • Fats: 7 g
  • Carbohydrates: 22 g
  • Proteins: 4 g