Monster Cookie Bars – The Real Food Dietitians

Monster Cookie Bars - The Real Food Dietitians 1
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Our favorite cookie made into a bar. Soft, chewy and peanut buttery⁠—these Monster Cookie Bars are studded with chocolate chips and candy-coated pieces. They make for a delightful treat when you’re craving something sweet and they’re perfect for sharing with a friend or family member, bringing to the cabin or on a camping trip, or sharing at a grill out or potluck. They’re gluten-free, dairy-free, and freezer-friendly.

Monster Cookie Bars cut after cooling on the counter

Monster Cookie Bars are made with no flour, are gluten-free, and made all in one bowl. A recipe that everyone will love!

One of our most favorite cookie recipes on the blog is our Monster Cookies! One day as I was making them I decided to make a lazy version of these scrumptious cookies, I skipped the scooping and instead turned them into a bar. I did have to tweak and test the recipe a couple of times to make sure the recipe made enough dough to fill a 9 x 13 pan, but they’re equally delicious. Like the cookie version, these Monster Cookie Bars are made with just a few ingredients, no flour, are gluten-free, and made all in one bowl. A recipe that combines ‘can’t beat combo’ of peanut butter and chocolate that everyone will love!

Ingredients needed to make Monster Cookie Bars

  • Rolled oats – also known as old-fashioned rolled oats. You may also sub quick oats if that’s what you have on hand. 
  • Brown sugar – I like to sub coconut sugar for a refined sugar-free option.
  • Baking soda
  • Salt
  • Natural crunchy or creamy peanut butter – may sub any nut or seed butter of choice. For a nut-free version, use sunflower seed butter. 
  • Melted butter – may also sub melted coconut oil for a dairy-free option.
  • Whole eggs
  • Pure vanilla extract
  • Candy-coated pieces – for a dye-free version use Unreal, Little Secrets, or Trader Joe’s. 
  • Chocolate chips – we like Enjoy Life for an allergy-friendly option.

Monster Cookie Bars with a bite taken out.

How to make Monster Cookie Bars

Gather your ingredients plus one bowl, one pan, measuring spoons and cups, and a 9×13 pan.

  • Step 1: Preheat the oven to 350 degrees. Spray a 9×13 baking pan with non-stick spray or line with parchment paper. We like to use parchment paper so that it’s easy to remove the bars from the pan and slice into squares. 
  • Step 2: In a bowl, combine all of the ingredients except the chocolate chips and candy-coated pieces. Stir to combine. Then fold in the chocolate chips and candy-coated pieces.
  • Step 3: Transfer dough the 9×13 pan, oil hands and spread the dough out evenly in the pan.
  • Step 4: Bake for about 18 minutes or until lightly golden brown and center is set.
  • Step 5: The hardest part⁠—allow to cool before cutting into bars.

Enjoy!

Monster cookie bars stacked

How to store Monster Cookie Bars

Once cooled, I like to store the bars in an airtight container in the fridge for up to one week. They don’t need to be stored in the fridge, but if you have access I recommend it.

How to freezer Monster Cookie Bars

Once cooled, transfer to an airtight container and divide each layer of the bar with parchments paper to prevent them from sticking together. Store in the freezer for up to 3 months.

Monster Cookie Bars ready to eat.

Other Cookie and Bar Recipes

Chocolate Peanut Butter Protein Cookies

Peanut Butter Chocolate Chip Granola Bars

Paleo Almond Butter Chocolate Chunk Cookies

The Best Monster Cookies

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Let’s Get Cookin’

Monster Cookie Bars

Our favorite cookie made into a bar. Soft, chewy and peanut buttery – these Monster Cookie Bars are studded with chocolate chips and candy-coated pieces. They make for a delightful treat when you’re craving something sweet!

  • Author: Stacie Hassing
  • Prep Time: 15 min
  • Cook Time: 18
  • Total Time: 33 minutes
  • Yield: 2024 bars 1x
  • Category: Treat
  • Method: Baking
Monster Cookie Bars stacked

Instructions

  1. Preheat the oven to 350 degrees. Spray a 9×13 baking pan or dish with non-stick spray or line with parchment paper. 
  2. In a medium bowl combine all of the ingredients except for the candy-coated pieces and chocolate chips. Stir to combine well. May use a standup mixer or hand mixer. 
  3. Gently fold in candy-coated pieces and chocolate chips. 
  4. Transfer dough to prepared 9×13 pan.
  5. Oil hands and spread dough out evenly into the pan. 
  6. Bake in the oven for 17-19 minutes or until lightly golden brown and center is set. Baking time will vary depending on if using a baking pan or glass dish. Start checking at the  17 minute mark. 
  7. For best results, cool completely before cutting into 20-24 bars. 
  8. Store in an airtight container for up to one week. May also freeze for later.

Notes

Bars hold together better after they are cooled. Like any cookie or bar they are pretty ooey gooey in the middle until after they cool for a bit.

Nutrition

  • Serving Size: 1 bar of 24
  • Calories: 210
  • Sugar: 12 g
  • Sodium: 150 mg
  • Fat: 12 g
  • Saturated Fat: 5 g
  • Carbohydrates: 22 g
  • Fiber: 3 g
  • Protein: 6 g

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Photo Credit: The photos in this blog post were taken by Jess of Plays Well with Butter

About Stacie Hassing

Stacie is a Licensed and Registered Dietitian from rural southern Minnesota where she and her husband reside on 5 acres with their two pups, Walter & Lucy. She’s a creator of simple and wholesome recipes, a lover of nature, a crossfitter, a seasonal runner, and she’s on a mission to inspire as many as she can live a healthier and happier life from the inside out.





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