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+ servings
stack of monster cookies layed out every where on marble stand

Monster Cookies

Stephanie Rutherford
Chewy monster cookies filled with peanut butter, quick oats, mini chocolate chips, and mini m&m's. These cookies are so soft in the middle with crisp edges
Prep Time 10 mins
Cook Time 13 mins
Resting Time 30 mins
Total Time 53 mins
Course Dessert
Cuisine American
Servings 15 Large cookies
Calories 133 kcal


  • ¾ cup All-purpose flour
  • 2 teaspoon Cornstarch
  • 1 teaspoon Baking soda
  • ¼ teaspoon Baking powder
  • ¼ teaspoon Salt
  • ½ cup Unsalted butter room temperature
  • 1 cup Packed brown sugar light or dark
  • ½ cup Peanut butter creamy
  • 1 teaspoon Pure vanilla extract
  • 1 Large egg plus 1 egg yolk room temperature
  • 1 cup Quick oats
  • 1 cup Mini chocolate chips
  • 1 cup Mini m&m candies


  • Sift together the flour, cornstarch, baking powder, baking soda, and salt in a medium bowl and set aside.
  • Using a stand mixer or hand mixer, cream together softened butter and brown sugar for 1 minute until light and fluffy. Add in peanut butter and mix for another minute. Add in vanilla. Next, add in egg and egg yolk one at a time.
  • Slowly add in dry ingredients and mix until combined. Add in oats, mini chocolate chips, and mini m&ms. Cover bowl and chill in fridge for 30 minutes.
  • Preheat oven to 350F, line 2 cookie sheets with parchment paper or silicone baking mats. Use an ice cream scoop and scoop 6 cookie balls per cookie sheet. Bake one cookie sheet at a time for 12-14 minutes. Cookies are done when they are lightly golden brown on the edges. Right when the cookies come out of the oven, place extra mini m&ms on top of cookies to flatten them down. Let cookies sit on cookie sheet for 4 minutes before transferring to cookie rack.


Calories: 133kcal
Keyword cookies, m&m cookies, monster cookies, oats cookies, peanut butter cookies
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