Peanut Butter Banana Bars

Featured in: Sweet Simple Treats

These bars blend creamy peanut butter, ripe bananas, and hearty oats for a chewy, wholesome treat. They require no baking and chill quickly to firm up. Combining subtle hints of cinnamon and sweetened with honey or maple syrup, they are perfect for an on-the-go energy boost. Optional additions include nuts or chocolate chips, adding texture and flavor. Simple to prepare, these bars offer a nutritious and satisfying snack that keeps well refrigerated.

Updated on Tue, 23 Dec 2025 08:44:00 GMT
Chewy Peanut Butter Banana Oat Bars, showing a close-up of the no-bake snack with visible oats and peanut butter. Save
Chewy Peanut Butter Banana Oat Bars, showing a close-up of the no-bake snack with visible oats and peanut butter. | tastlis.com

I discovered these bars on a Tuesday morning when I was frantically searching my pantry for something to quiet my growling stomach before a long meeting. What I found instead was ripe bananas about to go brown and a jar of peanut butter that had been calling my name for weeks. Twenty minutes later, I had a batch of these chewy, wholesome bars cooling in the fridge—and suddenly my entire week felt manageable. Now they're my go-to answer whenever someone asks what I'm bringing to a gathering.

My friend Marcus showed up to our hiking trip looking skeptical when I handed him one of these bars wrapped in foil. Fifteen minutes into the trail, he asked for another—then wanted the recipe before we'd even reached the summit. Now whenever we plan an outdoor adventure, he texts asking if I'm bringing them. There's something deeply satisfying about feeding people something you made with your own hands that genuinely makes them feel better.

Ingredients

  • Ripe bananas: Choose ones with soft spots and yellow skin—they're sweeter and mash more easily than firm ones, and that sweetness is what makes these bars feel indulgent without added sugar.
  • Creamy peanut butter: Don't reach for the natural stuff with the oil slick on top unless you enjoy a greasier bar; regular creamy peanut butter gives you the right texture and flavor.
  • Honey or maple syrup: Both work beautifully, though honey binds things together slightly better if you're being technical about it.
  • Vanilla extract: A teaspoon sounds small, but it rounds out the flavor in a way that makes people ask what you did differently.
  • Old-fashioned rolled oats: The key word is old-fashioned—instant oats will turn into mush, and steel-cut oats are too chunky for these bars.
  • Salt: Just a pinch to make everything taste more like itself, especially important when you're relying on whole foods.
  • Cinnamon: Adds warmth and depth without tasting like cinnamon overkill.
  • Nuts and chocolate chips: Optional but seriously worth it—they give you something to bite into and make the bars feel more special.

Instructions

Set up your workspace:
Line an 8x8-inch pan with parchment paper, letting the edges hang over the sides like handles. This small step saves you from frustration later when you're trying to wrestle the bars out of the pan.
Mash the bananas:
Use a fork or masher to break them down until mostly smooth—a few small lumps are fine and actually nice textually. You're looking for the consistency of soft applesauce.
Build your wet base:
Stir the peanut butter, honey, and vanilla into the bananas until everything is creamy and well combined. Don't skip the stirring part; getting this foundation right makes the rest effortless.
Fold in the dry ingredients:
Add oats, salt, cinnamon, and any mix-ins you're using, stirring until the mixture looks evenly distributed with no dry pockets. This is when your kitchen smells absolutely irresistible.
Press into the pan:
Transfer everything to your prepared pan and use the back of a spoon or spatula to press it down firmly and evenly. The pressure helps the bars hold together when you cut them later.
Chill and set:
Refrigerate for at least an hour, though overnight is even better if you have time. The cold makes them firm enough to cut cleanly.
Slice and store:
Use the parchment handles to lift the whole thing out, then slice into 12 bars with a sharp knife. Keep them in an airtight container in the fridge where they'll stay fresh for a full week.
Save
| tastlis.com

My cousin once told me that these bars reminded her of the energy bars her mom used to make for her soccer tournaments, except better because they didn't taste like compressed sadness. That comment stuck with me because it's exactly what I was aiming for—real food that happens to be convenient, nothing apologetic about it.

The Magic of No-Bake Snacks

There's something liberating about making something delicious without heating your kitchen or watching the oven. On hot summer days, I'll make these bars instead of baking, and there's always a moment of relief when I realize I don't have to deal with an extra 350 degrees in the house. Plus, the cold fridge time actually improves them—they firm up and become even more satisfying to bite into.

Customization Without Overthinking

I've made these bars with almond butter, sunflower seed butter, and even tahini on an experimental afternoon when I was out of peanut butter. Each version tasted different but equally good, which tells you something important: this recipe is forgiving and flexible. You can add dried cranberries, swap the chocolate chips for granola, or fold in some unsweetened coconut flakes without ruining anything. The base is strong enough to support your preferences.

Why These Bars Work for Every Occasion

I've brought these to potlucks where people assumed they were store-bought, tucked them into my gym bag before early morning workouts, and even served them at a dinner party when someone asked for dessert. They work because they straddle the line between snack and treat, wholesome and indulgent, quick to make and elegant enough to serve. The banana and peanut butter combination is nostalgic without feeling childish, and the oats make them feel substantial.

  • Wrap individual bars in wax paper to stack them neatly and grab one on your way out the door.
  • If your kitchen is warm, keep them in the freezer instead of the fridge—they thaw within a few minutes and actually taste better cold.
  • Make a double batch and freeze the extras wrapped well; they last for at least three weeks and taste freshly made when you thaw them.
Appealing Peanut Butter Banana Oat Bars, ready to eat, are studded with chocolate chips and banana slices. Save
Appealing Peanut Butter Banana Oat Bars, ready to eat, are studded with chocolate chips and banana slices. | tastlis.com

These bars have become my answer to the question of what to feed people when I want them to feel taken care of without spending hours in the kitchen. They're proof that simple ingredients and a little bit of intention can create something genuinely nourishing.

Recipe FAQs

Can I substitute peanut butter with other nut butters?

Yes, almond or sunflower seed butter can be used as alternatives for a different flavor and to accommodate allergies.

How long should the bars chill for best texture?

Refrigerate the bars for at least 1 hour to allow them to firm up sufficiently for easy slicing.

Are there vegan-friendly sweetener options?

Maple syrup is a great vegan-friendly alternative to honey for sweetening the bars naturally.

What optional mix-ins work well?

Chopped walnuts, pecans, or mini chocolate chips add texture and flavor to the bars but are optional.

How should the bars be stored?

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

Peanut Butter Banana Bars

Chewy bars with peanut butter, banana, and oats make a wholesome, quick energy snack.

Prep Time
10 min
0
Overall Time
10 min
Author Lena Foster


Skill Level Easy

Cuisine American

Makes 12 Portions

Dietary details Vegetarian, Free from Dairy

What You'll 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

Directions

Instruction 01

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

Instruction 02

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

Instruction 03

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

Instruction 04

Add Dry Ingredients: Incorporate the rolled oats, salt, cinnamon, and optional nuts or chocolate chips. Stir until the mixture is evenly combined.

Instruction 05

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

Instruction 06

Chill Bars: Refrigerate for at least 1 hour, or until firm enough to cut.

Instruction 07

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

Tools Needed

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

Allergy Notes

Review each component for possible allergens. If you aren't sure, ask a health pro.
  • Contains peanuts; may contain tree nuts if walnuts or pecans are used.
  • Contains oats; use certified gluten-free oats if gluten intolerance is a concern.
  • Contains honey; not recommended for infants under one year.

Nutrition Info (per portion)

This nutrition data is just for your information—always check with a healthcare provider if needed.
  • Energy: 160
  • Fats: 7 g
  • Carbohydrates: 22 g
  • Proteins: 4 g