Monster Cookie Bars {naturally gluten free recipe}

27 Comments 5

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

Jump to Recipe

Monster Cookies have been my family’s favorite cookie ever since I was a child. We use my grandmother’s recipe and make a giant batch of the cookies every year for our family’s camping trip. However, this year we simply ran out of time for our baking plans.

EASY Monster Cookie Bars (naturally gluten free) recipe by Barefeet In The Kitchen

I adjusted the recipe slightly and pressed the cookie dough into the bottom of a large baking sheet. In less time than it would have taken to bake a single tray of cookies, I had these bars cooling on the counter.

Easy as can be and the bars were a huge hit with everyone that tried them.

I was expecting a fun treat to snack on over the weekend, but these bars came close to trumping the original Monster Cookies. Slightly more gooey than the cookies and still crisp on top and bottom, this is one of the best bar cookies I’ve ever tasted.

Monster Cookie Bars (naturally gluten free!) recipe by Barefeet In The Kitchen

Check out all of the Gluten Free Dessert Recipes on this website!

Get New Recipessent to your inbox!
We never share your information with third parties and will protect it in accordance with our Privacy Policy.

Monster Cookie Bars {naturally gluten free recipe}

5 from 3 votes
Pin Print Review
Servings: 36 -48 small bars


  • 2/3 cup butter room temperature
  • 2 cups light brown sugar
  • 1 1/3 cups white sugar
  • 4 eggs
  • 1 1/2 teaspoons baking soda
  • 1 teaspoon vanilla extract
  • 1 tablespoon maple syrup
  • 2 cups crunchy peanut butter
  • 6 cups old fashioned oats
  • 1 cup semi-sweet chocolate chips
  • 1/2 cup m&m candies for topping


  • Preheat oven to 350 degrees. Beat together the butter and sugars. Add the eggs, vanilla, syrup, and baking soda. Stir in the peanut butter. Add the oats and stir again until well combined. Mix in the chocolate chips.
  • Press the dough into the bottom of a large baking sheet, or jelly roll pan. Top with the m&ms and lightly press them into the dough. Bake for 16-17 minutes, until the bars are lightly browned and just past looking wet on top. They will not be firm, but they will set up as they cool. Enjoy!
Tried this recipe?Mention @barefeetkitchen or tag #barefeetkitchen!

Pin this nowto remember it later
Pin this recipe0


Filed under: , , , ,

Related Posts

Mary Younkin

Mary Younkin

Hi, I’m Mary. I’m the author, cook, photographer, and travel lover behind the scenes here at Barefeet In The Kitchen. I'm also the author of three cookbooks dedicated to making cooking from scratch as simple as possible.

Reader Interactions

27 Comments Leave a comment or review

    Rate & Comment


    You can now include images of your recipes in your comments! You'll need to register or log in to upload images.

  1. Happy home says

    I think I’m going to love this recipe and I’m sure that my gluten free grandchildren will also! Do these freeze well?

  2. Jill says

    These were a hit at the church meal! I left out the peanut butter and M&Ms because of allergies and decreased the oats by 1/2 cup. They were so good! Thank you!

  3. Amanda says

    I made the version in your Weeknight Dessert Cookbook and they are a huge hit! My co-workers are freaking out! But the recipe is different (fewer ingredients and an 8×8 pan). Do you have that version of the recipe posted on the blog or is it just in the book?5 stars