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+ servings
Soft and chewy monster oatmeal peanut butter cookies with chocolate chips and M&M's. #monstercookierecipe

Oatmeal Peanut Butter Monster Cookies

Kara
My family's favorite oatmeal cookie. Loaded with peanut butter, chocolate chips, and M&M's. Always a hit!
4.60 from 27 votes
Prep Time 19 minutes
Cook Time 10 minutes
Total Time 29 minutes
Course Dessert: Cookies
Cuisine American
Servings 72 cookies (approximately)
Calories 251 kcal

Ingredients
  

  • 1 cup butter softened to room temperature
  • 3 ¼ cups creamy peanut butter
  • 2 ⅓ cups brown sugar
  • 1 ½ cups sugar
  • 1 ½ tsp corn syrup or honey
  • 1 ½ tsp vanilla
  • 4 tsp baking soda
  • 2 tsp salt
  • 6 eggs
  • 2 ½ cups M&M's
  • 1 cup milk chocolate chips
  • 1 ½ cup semi sweet chocolate chips
  • 9 cups old fashioned oats

Instructions
 

  • Soften butter to room temperature. Preheat oven to 350 degrees.
  • Cream butter, peanut butter, sugars, corn syrup, vanilla, soda, and salt in a large mixing bowl till very creamy, 2-3 minutes. Add the eggs and mix well.
  • Stir in M&M's, chocolate chips, and oats till well combined. (Dough will be fairly sticky.) I like to reserve some chips and M&M's to press into the tops of the cookie dough balls before baking.
  • Form tablespoons of dough into balls and place them onto silicone lined or greased cookie sheets. Flatten cookie dough balls with the palm of your hand.
  • Bake at 350° for 9-10 minutes.

Notes

  • There is no mistake, these cookies have no flour.
  • These cookies don't spread as much as traditional cookies, so you can flatten the dough a bit before baking.
  • I find that using old fashioned oats is best, the quick oats make a drier cookie.
  • For large bakery-style cookies, use 2 1/2-3 tablespoons of dough and bake for about 12 minutes.

Nutrition

Serving: 1gCalories: 251kcalCarbohydrates: 29gProtein: 5gFat: 13gSaturated Fat: 5gPolyunsaturated Fat: 2gMonounsaturated Fat: 4gTrans Fat: 0.1gCholesterol: 22mgSodium: 209mgPotassium: 147mgFiber: 2gSugar: 20gVitamin A: 117IUVitamin C: 0.04mgCalcium: 32mgIron: 1mg
Keyword monster cookies
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