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+ servings
close up shot of no bake monster cookies stacked on top of eachother

No Bake Monster Cookies

No bake monster cookies are packed full of oats, peanut butter, chocolate and M&Ms.
Course Dessert
Cuisine American
Keyword No Bake Monster Cookies Recipe
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings 16 squares
Calories 280kcal


  • 6 tbsp butter softened
  • 6 tbsp sugar
  • 1/4 cup brown sugar
  • 3/4 cup creamy peanut butter
  • 6 tbsp quick cooking oats pulsed in food processor
  • 1 tsp vanilla extract
  • 1/2 tsp salt
  • 1 1/2 cup quick cooking oats not pulsed in the food processor
  • 10 tbsp miniature M&M's divided
  • 1 cup semi-sweet chocolate chips
  • 3 tbsp heavy cream


  • Prepare an 8-inch baking dish by lining it with either foil or parchment paper. Set aside.
  • In a large mixing bowl, cream together the butter and sugars. Add peanut butter and mix well.
  • Add in the 6 tablespoons of quick cooking oats (pulsed in food processor), vanilla, and salt. Slowly add the 1½ cups of oats. Fold in ½ cup of M&M’s.
  • Press the mixture into the prepared pan.
  • Melt the chocolate chips and heavy cream in a small bowl in the microwave, stirring every 30 seconds. Once the chocolate is smooth, spread it over the cookie dough mixture. Sprinkle with the remaining 2 tablespoons of M&M’s.
  • Cover and refrigerate for at least 2 hours or until set. Cut into squares.


Pulsing the oats in the food processor is optional. If omitting this step, replace these oats with 6 tablespoons of all-purpose flour.


Calories: 280kcal | Carbohydrates: 26g | Protein: 5g | Fat: 18g | Saturated Fat: 9g | Cholesterol: 17mg | Sodium: 334mg | Potassium: 164mg | Fiber: 2g | Sugar: 19g | Vitamin A: 319IU | Vitamin C: 1mg | Calcium: 51mg | Iron: 3mg