Go Back
+ servings
Monster Cookies - Thick, soft, chunky and absolutely our favorite recipe!
Print Recipe
4.23 from 9 votes

Monster Cookies Recipe

Thick, soft, chunky Monster Cookies will be your new favorite cookie.
Prep Time2 hrs 10 mins
Cook Time14 mins
Total Time2 hrs 24 mins
Course: Cookie, Dessert
Cuisine: American
Keyword: cookies, monster, monster cookies
Servings: 18
Calories: 314kcal
Author: Don't Sweat The Recipe


  • 1/2 cup unsalted butter, softened
  • 1/2 cup creamy peanut butter
  • 3/4 cup brown sugar
  • 1/4 cup white sugar
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 2 teaspoons cornstarch
  • 1 1/2 cups all-purpose flour
  • 1 cup old-fashioned oats
  • 1 cup mini M&M's candies
  • 1/2 cup mini semi-sweet chocolate chips
  • 1/2 cup butterscotch chips


  • In the bowl of a stand mixer, cream together the butter and peanut butter until smooth.
  • Add the brown sugar & white sugar, creaming together until fluffy.
  • Add in the eggs and vanilla, beating well.
  • In a separate bowl, mix the baking soda, salt, cornstarch, and flour, until combined.
  • Then add the dry ingredient mixture to the wet ingredients.
  • Stir in the oats, M&M's, chocolate chips, and butterscotch until just combined.
  • Cover and refrigerate dough for at least 2 hours, up to overnight. (we refrigerate overnight)
  • Preheat oven to 350 degrees F. Line 2 baking sheets with parchment or silicone liners.
  • Drop heaping 1/4 cup-sized balls of dough onto the baking sheets, about 2-3" apart.
  • Bake for approximately 12-14 minutes, rotating pans halfway through baking time to ensure even cooking. Cookies may appear slightly undone in the center; this is normal and they'll continue to set as they cool.
  • Cool on the baking sheet for at least 5 minutes then transfer to racks.


Calories: 314kcal | Carbohydrates: 40g | Protein: 5g | Fat: 15g | Saturated Fat: 7g | Cholesterol: 40mg | Sodium: 242mg | Potassium: 132mg | Fiber: 2g | Sugar: 26g | Vitamin A: 225IU | Vitamin C: 1mg | Calcium: 37mg | Iron: 2mg