Chunky Monkey Protein Baked Oat Bars

Featured in: Fast Snacks & Starters

These Chunky Monkey bars combine ripe bananas, creamy peanut butter, and rolled oats with vanilla protein powder for a nutritious grab-and-go option. Dark chocolate chips and chopped walnuts add texture while delivering that classic banana-chocolate combination everyone loves.

Mixing comes together in just 10 minutes with simple pantry staples—mashed bananas, applesauce, honey, almond milk, and vanilla create the moist base. The oat and protein mixture provides structure without becoming dense, while walnuts offer crunch and healthy fats.

Bake until golden and let cool completely before slicing into 12 portions. These bars stay fresh for days at room temperature or keep longer refrigerated. Perfect for meal prep, school lunches, or afternoon snacking.

Updated on Mon, 09 Feb 2026 17:58:40 GMT
Freshly baked Chunky Monkey Protein Baked Oat Bars loaded with chocolate chips and walnuts. Pin It
Freshly baked Chunky Monkey Protein Baked Oat Bars loaded with chocolate chips and walnuts. | hyperflavors.com

These Chunky Monkey Protein Baked Oat Bars are a wholesome, banana-chocolate treat inspired by the classic smoothie bowl flavor combination. Perfectly balanced and easy to prepare, they make a fantastic breakfast or an on-the-go snack for those busy mornings.

Freshly baked Chunky Monkey Protein Baked Oat Bars loaded with chocolate chips and walnuts. Pin It
Freshly baked Chunky Monkey Protein Baked Oat Bars loaded with chocolate chips and walnuts. | hyperflavors.com

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The natural sweetness of ripe bananas paired with the rich crunch of walnuts and dark chocolate chips creates a satisfying texture. At only 160 calories per bar, it is a guilt-free way to fuel your day.

Ingredients

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Wet Ingredients
  • 2 large ripe bananas, mashed
  • 1/3 cup (80 ml) unsweetened applesauce
  • 1/4 cup (60 ml) honey or maple syrup
  • 1/4 cup (60 ml) unsweetened almond milk
  • 1/4 cup (60 g) natural peanut butter
  • 1 tsp vanilla extract
Dry Ingredients
  • 2 cups (200 g) old-fashioned rolled oats
  • 1/2 cup (60 g) vanilla or chocolate protein powder
  • 1/4 cup (30 g) chopped walnuts
  • 1/4 cup (40 g) dark chocolate chips
  • 1/4 tsp salt
  • 1/2 tsp ground cinnamon
  • 1 tsp baking powder

Instructions

Step 1
Preheat your oven to 350°F (175°C). Line an 8x8-inch (20x20 cm) baking pan with parchment paper.
Step 2
In a large bowl, mash the bananas until smooth. Stir in applesauce, honey or maple syrup, almond milk, peanut butter, and vanilla extract until well combined.
Step 3
In a separate bowl, combine oats, protein powder, walnuts, chocolate chips, salt, cinnamon, and baking powder.
Step 4
Add the dry ingredients to the wet ingredients. Mix until just combined; do not overmix.
Step 5
Spread the mixture evenly in the prepared baking pan.
Step 6
Bake for 22–25 minutes, or until the bars are set and golden around the edges.
Step 7
Allow to cool completely in the pan before slicing into 12 bars.

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Ensure your bananas are very ripe with brown spots for maximum sweetness and moisture. Using a spatula to spread the batter will help ensure an even bake throughout the pan. Always allow the bars to cool completely before cutting to prevent them from crumbling.

Varianten und Anpassungen

For a nut-free version, leave out the walnuts or swap them for seeds. To make these bars vegan, use maple syrup, vegan protein powder, and dairy-free chocolate chips. You can also boost the nutrition by adding chia or flax seeds to the dry mixture.

Serviervorschläge

These bars are delicious on their own or served with a glass of cold milk or a hot cup of coffee. Store them in an airtight container at room temperature for 3 days or in the refrigerator for up to 1 week to maintain freshness.

Warm Chunky Monkey Protein Baked Oat Bars served with a glass of cold milk. Pin It
Warm Chunky Monkey Protein Baked Oat Bars served with a glass of cold milk. | hyperflavors.com
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Whip up a batch of these Chunky Monkey Protein Baked Oat Bars and enjoy a delicious, energy-packed snack that tastes just like your favorite smoothie bowl!

Recipe Questions & Answers

Can I make these bars vegan?

Yes, use maple syrup instead of honey and choose a plant-based vanilla or chocolate protein powder. Swap the dark chocolate chips for certified dairy-free chips to ensure the entire batch is vegan-friendly.

What protein powder works best?

Vanilla or chocolate whey protein powder blends well, though casein can make the bars denser. Plant-based options like pea or hemp protein also work—expect a slightly heartier texture. Avoid unflavored varieties if you prefer a sweeter result.

How do I store these bars?

Keep in an airtight container at room temperature for up to 3 days. For longer freshness, refrigerate for up to a week. They also freeze beautifully—wrap individually and freeze for up to 3 months, thawing overnight in the refrigerator.

Can I reduce the sugar content?

The sweetness primarily comes from ripe bananas, honey or maple syrup. You can reduce the sweetener to 2 tablespoons if using very ripe bananas. Skip the chocolate chips or use cacao nibs for a less refined sugar option.

Why do my bars turn out crumbly?

Overmixing can create a dense, crumbly texture—mix until just combined. Ensure your bananas are thoroughly mashed for proper moisture. Adding an extra tablespoon of almond milk can help if the mixture seems too dry before baking.

Can I use quick oats instead of old-fashioned?

Old-fashioned rolled oats provide better texture and structure. Quick oats may make the bars softer and less substantial. If using quick oats, reduce the amount slightly and add a few extra minutes of baking time.

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Chunky Monkey Protein Baked Oat Bars

Soft baked oat bars with bananas, peanut butter, chocolate chips, and walnuts for a protein-packed breakfast or snack.

Time to Prep
10 min
Time to Cook
25 min
Total Duration
35 min
Created by Aria Brooks


Skill Level Easy

Cuisine Type American

Makes 12 Serving Size

Dietary Notes Vegetarian-Friendly

What You'll Need

Wet Ingredients

01 2 large ripe bananas, mashed
02 1/3 cup unsweetened applesauce
03 1/4 cup honey or maple syrup
04 1/4 cup unsweetened almond milk
05 1/4 cup natural peanut butter
06 1 teaspoon vanilla extract

Dry Ingredients

01 2 cups old-fashioned rolled oats
02 1/2 cup vanilla or chocolate protein powder
03 1/4 cup chopped walnuts
04 1/4 cup dark chocolate chips
05 1/4 teaspoon salt
06 1/2 teaspoon ground cinnamon
07 1 teaspoon baking powder

How to Make It

Step 01

Prepare baking pan: Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper.

Step 02

Combine wet ingredients: In a large bowl, mash bananas until smooth. Stir in applesauce, honey or maple syrup, almond milk, peanut butter, and vanilla extract until well combined.

Step 03

Mix dry ingredients: In a separate bowl, combine oats, protein powder, walnuts, chocolate chips, salt, cinnamon, and baking powder.

Step 04

Combine wet and dry mixtures: Add dry ingredients to wet ingredients. Mix until just combined; do not overmix.

Step 05

Spread batter: Spread mixture evenly in the prepared baking pan.

Step 06

Bake bars: Bake for 22 to 25 minutes, or until bars are set and golden around the edges.

Step 07

Cool and slice: Allow to cool completely in the pan before slicing into 12 bars.

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What You Need

  • Mixing bowls
  • 8x8-inch baking pan
  • Parchment paper
  • Spatula
  • Knife

Allergy Info

Be sure to check every ingredient for possible allergens. If unsure, reach out to a health specialist.
  • Contains peanuts and walnuts
  • May contain milk and soy from chocolate chips and protein powder
  • Check all ingredient labels for gluten, dairy, and soy if you have allergies

Nutritional Breakdown (per serving)

Nutritional details are for informational purposes and shouldn't replace advice from your doctor.
  • Caloric Value: 160
  • Fats: 6 g
  • Carbohydrates: 21 g
  • Proteins: 6 g

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