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Close up photo of a stack of Monster cookies on a
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5 from 2 votes

Monster Cookies

These Monster Cookies are sweet and chewy with a little bit of everything in them! M&M's, Reese's Pieces, Chocolate Chips, Oatmeal, Coconut, Toffee, and Sprinkles. They're the ultimate cookie and the first batch is out of the oven in less than 30 minutes!
Prep Time10 mins
Cook Time13 mins
Total Time23 mins
Course: Dessert
Cuisine: American
Servings: 48 cookies
Calories: 134kcal



  • Preheat oven to 350°F and line large cookie sheet with parchment paper and set aside.
  • Cream together the sugars, peanut butter, butter, and vanilla in a stand mixer fitted with a paddle attachment and mix on medium speed until smooth.
  • Turn to low speed and add the eggs one at a time, scraping down the sides as needed.
  • Slowly add oats, flour, and baking soda and mix until combined.
  • Mix in candy, chocolate, chips, coconut, and sprinkles.
  • Use a medium cookie scoop to measure out dough and roll dough between the palms of your hands to make balls. Place balls on prepped cookie sheet at least 2 inches between each cookie.
  • Bake for 11 to 13 minutes until cookies starts to brown, they will seem a little underdone at first, but that's okay, let them rest for 2 to 3 minutes on the pan before moving to a cooling rack to cool completely.


  • Store cookies for up to 5 days in an airtight container.
  • Toffee and coconut could be omitted if desired.
  • The dough can be stored in the refrigerator for up to 2 days, although I recommend portioning it out into dough balls before chilling otherwise the dough can be tough to work with.


Calories: 134kcal | Carbohydrates: 17g | Protein: 2g | Fat: 6g | Saturated Fat: 2g | Cholesterol: 15mg | Sodium: 79mg | Potassium: 65mg | Sugar: 12g | Vitamin A: 80IU | Calcium: 13mg | Iron: 0.5mg