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Recipes Desserts Cookies & Bars

Blueberry Oat Crumble Bars

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Author:

Erin

Published:

July 22, 2020

Updated:

September 5, 2021

This post may contain affiliate links. Please read my disclosure policy for details.

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Another Wednesday, another recipe! This one is a delicious summer dessert (or breakfast!) featuring my favorite berry – blueberries! These Blueberry Crumble Oat Bars are a little healthier than your average dessert bar thanks to the use of a few healthier options like apple sauce, white whole wheat flour, and even a kick of plant protein.

  • Blueberry Oat Crumble Bars
    • Ingredients
    • Instructions
    • Nutrition Information
    • Did You Make This?

It took me a few tries to get the dough just right – sturdy enough to hold up to the gooey blueberries on top but delicate enough that you don’t even NEED to eat it with ice cream to love it. Though I’m not sure why you’d WANT to skip the ice cream…

I used the same base recipe as these Strawberry Rhubarb Oat Crumble Bars because once I got it right, I wanted to try ALL. THE. SUMMER. FLAVORS. You might want to as well, so don’t say you weren’t warned.

Look how gorgeous and golden brown delicious that crumble topping gets in the oven! I hope you enjoy these bars as much as I did.

3.75 from 4 votes

Blueberry Oat Crumble Bars

Servings: 9 bars
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Servings: 9 bars

Ingredients

  • 1 3/4 cup rolled oats, (140 grams)
  • 1 1/2 scoops PE Science vanilla plant protein, (42 grams)
  • 2/3 cup unsweetened applesauce, (163 grams)
  • 1/4 cup light brown sugar, (48 grams)
  • 1/4 cup Skippy Natural Peanut Butter, melted, (64 grams)
  • 1 egg, beaten
  • 1 egg yolk, beaten
  • 1 tsp cinnamon
  • 1 tsp vanilla extract
  • 1/4 tsp salt

Blueberries

  • 2 cups blueberries, (297 grams)
  • 2 tbsp sugar, (24 grams)
  • 1 1/2 tbsp cornstarch, (15 grams)
  • 1 1/2 tbsp warm water
  • 1/2 tbsp lemon zest

Crumble Topping

  • 1/2 cup rolled oats, (40 grams)
  • 1/4 cup light brown sugar, (48 grams)
  • 1/4 cup white whole wheat flour, (32 grams)
  • 3 tbsp unsalted butter, cold and cubed, (43 grams)
  • 1/4 tsp cinnamon

Instructions

  • Pre-heat oven to 350 degrees. Line an 8×8 inch baking dish with parchment paper and set aside.
  • Whisk cornstarch into warm water and set aside.
  • Make the blueberry filling: Add blueberries, sugar, and lemon zest to a pot and bring to a simmer over medium heat. Once blueberries have begun to burst, bring to a quick boil for 1 minute and remove from heat. Whisk in cornstarch slurry and set aside to cool and thicken.
  • Make the crust: Stir applesauce, melted peanut butter, 1/4 cup light brown sugar, beaten egg, vanilla, and salt together in a medium bowl. Add rolled oats, protein powder, and cinnamon and stir until everything is combined. Press the mixture evenly into the prepared baking pan.
  • Pour blueberry mixture over the crust and spread evenly. Set aside.
  • Make the topping: Cut in the chilled butter into the flour with a pastry cutter or food processor (or even with your hands) until the mixture resembles coarse crumbs. Mix in the oats, brown sugar, and cinnamon.  Sprinkle the crumble over the filling.
  • Bake for 35-40 minutes or until the top is golden brown.

Nutrition Information

Calories: 277kcal (14%), Carbohydrates: 39g (13%), Protein: 9g (18%), Fat: 10g (15%), Cholesterol: 51mg (17%), Sodium: 98mg (4%), Potassium: 149mg (4%), Fiber: 4g (17%), Sugar: 19g (21%)

Did You Make This?

If you make this, please leave a review and rating letting me know how you liked this recipe! This helps my business thrive & continue providing free recipes. You can also tag me on Instagram at @peanutbutterandfitness so I can see your creations!

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About Erin

Erin is the author behind Peanut Butter and Fitness. She started this website in 2013 as a way to keep track of her favorite healthier kitchen creations and meal preps. Today, she still loves playing with her food and camera while helping others strike a balance between indulgence and well-being.

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3.75 from 4 votes (4 ratings without comment)

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2 responses

  1. Shaquana Chinnery
    August 3, 2020

    i enjoy this website

    Reply
    1. Erin
      August 8, 2020

      Thanks Shaquana!

      Reply

WELCOME

Hey, I’m Erin!

I like to describe PBF as a healthy eating blog with a dollop of indulgence. Here you’ll find high protein and veggie-packed meals with a side of cocktails and desserts.

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