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No Flour Monster Cookie Bars | Celebrate the holidays and make Santa's favorite Christmas cookie bars! No flour Christmas cookie bars are loaded with oats, peanut butter, chocolate, and festive green & red mini m&m's. Thick, chewy bars that everyone loves and they only take minutes to make | www.togetherasfamily.com #christmascookies #noflourdesserts #monstercookiebars #noflourbars #cookiebarrecipes

No Flour Christmas Monster Cookie Bars

No flour Christmas Cookie Bars are loaded with oats, peanut butter, chocolate, and festive green & red mini m&m's. Thick, chewy bars that everyone loves and and even Santa too!
Course Dessert
Cuisine American
Keyword christmas recipe, monster cookie bars, no flour monster cookie bars
Prep Time 10 minutes
Cook Time 17 minutes
Total Time 27 minutes
Servings 40 bars
Calories 220kcal
Author Jessica


  • 1/2 cup (1 stick) butter, softened
  • 1 cup granulated sugar
  • 1 cup light brown sugar
  • 1 1/2 cups creamy peanut butter
  • 3 large eggs
  • 1 tablespoon vanilla extract
  • 1 1/2 cups quick oats
  • 3 cups old-fashioned oats
  • 1 teaspoon baking soda
  • 1 cup mini chocolate chips
  • 1 bag (11 oz) Christmas mini m&m's mix


  • Heat oven to 350 degrees. Prepare a cookie sheet by lining with parchment paper, silpat liner, or spraying with cooking spray.
  • In a large bowl, or bowl of stand mixer with the paddle attachment, combine butter, brown sugar, granulated sugar, and peanut butter. Mix until fluffy and pale in color. About 1-2 minutes.
  • Add the eggs and vanilla extract. Mix together.
  • Add in the oats and baking soda. Blend until combined.
  • Add in mini chocolate chips and 1 1/2 cups of the mini m&m's (reserve the rest for the top) and blend together just until combined.
  • Dump dough onto the cookie sheet and spread out with a spatula or back of a silverware spoon. Sprinkle the reserved m&m's and additional chocolate chips on top (if wanted). Press them down slightly into the dough.
    Bake for 17-20 minutes.
  • The edges will be lightly browned and the middle will still look pale and underdone, but it will finish baking as it cools. Let cool for AT LEAST 1 HOUR so the bars can firm up and come together. You do not want to over-bake these! They will be very soft and loose right out of the oven, but I promise they come together perfectly while cooling.



Natural peanut butter does not work well in this recipe. You of course can always try it, but natural peanut butter is thicker and not enough liquid/oil in it, so baked goods tend to turn out dry and crumbly. But again, try it out and maybe you'll like it. 
Many people have reduced the sugar by half or a quarter with great results. 
I love the texture of the quick + old fashioned oats together so that's why there are two different oats listed. Many people have used all quick oats with great results. 


Calories: 220kcal | Carbohydrates: 27g | Protein: 5g | Fat: 11g | Saturated Fat: 4g | Cholesterol: 22mg | Sodium: 108mg | Potassium: 108mg | Fiber: 2g | Sugar: 19g | Vitamin A: 119IU | Vitamin C: 1mg | Calcium: 30mg | Iron: 1mg