close up photo of monster cookies with a bowl of M&M's on the side

Monster Cookies

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Soft and chewy Monster Cookies are loaded with peanut butter, oats, M&M’s, and chocolate chips. These classic cookies are thick, filling, and irresistible. They’re a mix between an oatmeal chocolate chip cookie, and a peanut butter cookie, and will become a favorite with family and friends.

Monster Cookies with M&M's in a bowl on the side

I love making cookies, and these Monster Cookies are at the top of my list. I love the texture from the oats, the crunch from the M&M’s, and the slight peanut butter flavor. They are so easy to make and bake up soft and thick. Some of my other favorite cookie recipes are our Key Lime Cookies, soft and fudgy Brownie Cookies, and our Red Velvet Cookies With Cream Cheese Frosting. If your looking for the best cookie recipe, you have come to the right place.

Ingredients for Monster Cookies

  • Butter: I always use unsalted butter in my recipes to control the salt content.
  • Sugar: This recipe calls for a combination of white granulated sugar, and brown sugar.
  • Peanut Butter: This recipe calls for creamy peanut butter life Skippy or Jiff.
  • Vanilla: Pure vanilla or vanilla extract both work well.
  • Eggs: This recipe calls for one egg, medium-large.
  • Flour: All-purpose flour works better in this cookie recipe.
  • Oats: I like to use Old Fashioned Oats for that chewy texture everyone loves.
  • Baking Powder and Baking Soda: Both baking powder and baking soda are leavening agents and help give you the chewy texture.
  • Salt: Salt brings out the sweetness in these cookies.
  • Chocolate Chips: Semi-sweet for milk chocolate chips both work well.
  • M&M’s: I like to use regular M&M’s, but you can also use the mini M&M’s.

How to make monster cookies

  • In a large mixing bowl cream together softened butter, granulated sugar, and brown sugar with a hand mixer until light and fluffy.
  • Add peanut butter and mix well.
  • Next, add egg and vanilla and beat until well combined.
  • In a medium size mixing bowl mix flour, oats, baking powder, baking soda, and salt.
  • Add dry ingredients to wet ingredients and mix well with a hand mixer until fully combined.
  • Stir in chocolate chips and M&M’s.
  • Cover and refrigerate dough for at least an hour.
  • Once cookie dough has had time to chill, preheat oven to 350F and line a baking sheet with parchment paper.
  • Scoop cookie dough into about 2 Tbps. balls and place on prepared baking sheet.
  • Bake in preheated oven for 10-12 minutes, or until cookies are lightly browned around the edges and soft in the middle. Be careful not to over bake cookies.
  • Transfer cookies to a wire rack to cool. Enjoy!
close up photo of monster cookies with a bowl of M&M's

Monster cookie add-ins

  • Peanut Butter Chips
  • Pretzels
  • Raisins
  • Peanuts, Almonds, Walnuts

How to freeze

  • To freeze the cookie dough: Scoop cookie dough into individual balls and place them on a cookie sheet. Place the cookie sheet in the freezer for about an hour or until they are mostly frozen. Place frozen cookie dough into a freezer safe container or freezer bag. When you are ready to bake, remove from freezer and bake as directed, adding a few more minutes to the baking time.
  • To freeze baked cookies: Place completely cooled cookies into a freezer safe container or freezer bag, and freeze for up to 2 months. Remove from the freezer and allow to defrost when ready to eat.
Monster cookies cooling with a bowl of M&M's
close up photo of monster cookies with a bowl of M&M's on the side

Monster Cookies

April King
Soft and chewy Monster Cookies are loaded with peanut butter, oats, M&M's, and chocolate chips. These classic cookies are thick, filling, and irresistible. They're a mix between an oatmeal chocolate chip cookie, and a peanut butter cookie, and will become a favorite with family and friends.
5 from 1 vote
Prep Time 15 mins
Cook Time 10 mins
chill time 1 hr
Total Time 25 mins
Course Dessert
Cuisine American
Servings 24 cookies
Calories 178 kcal

Ingredients
  

  • 1/2 cup unsalted butter, softened
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar
  • 1/2 cup peanut butter
  • 1 1/2 tsp. vanilla
  • 1 egg
  • 1 cup all purpose flour
  • 1 1/4 cup old fashioned oats
  • 1/2 tsp. baking powder
  • 1/2 tsp. baking soda
  • 1/4 tsp. salt
  • 3/4 cup M&M's
  • 1/2 cup semi-sweet chocolate chips

Instructions
 

  • In a large mixing bowl cream together softened butter, granulated sugar, and brown sugar with a hand mixer until light and fluffy.
  • Add peanut butter and mix well.
  • Next, add egg and vanilla and beat until well combined.
  • In a medium size mixing bowl mix flour, oats, baking powder, baking soda, and salt.
  • Add dry ingredients to wet ingredients and mix well with a hand mixer until fully combined.
  • Stir in chocolate chips and M&M’s.
  • Cover and refrigerate for at least an hour.
  • Once cookie dough has had time to chill, preheat oven to 350F and line a baking sheet with parchment paper.
  • Scoop cookie dough into about 2 Tbps. balls and place on prepared baking sheet.
  • Bake in preheated oven for 10-12 minutes, or until cookies are lightly browned around the edges and soft in the middle. Be careful not to over bake cookies.
  • Transfer cookies to a wire rack to cool. Enjoy!

Notes

Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. Nutrition facts are an estimate and not guaranteed to be accurate. I am not a certified nutritionist and any nutritional information shared on Modernmealmakeover.com should only be used as a general guideline.

Nutrition

Serving: 1cookieCalories: 178kcalCarbohydrates: 21.2gProtein: 3.1gFat: 9.4gCholesterol: 18.8mgSodium: 72.3mgPotassium: 21.8mgFiber: 1.2gSugar: 13.1gVitamin A: 2.8IUCalcium: 3.5mgIron: 2.8mg
Keyword Monster Cookie Recipe, Monster Cookies
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