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–+ servings
Monster Cookies
Monster Cookies are a playful and hearty treat loaded with everything from oats and peanut butter to chocolate chips and colorful M&M candies. Emerging in the Midwest during the 1960s and 70s, these cookies became popular for their chewy texture, protein-packed ingredients, and ability to please both kids and adults. The combination of oats, peanut butter, and mix-ins makes them a cross between an oatmeal cookie and a candy bar. They're great for bake sales, lunchboxes, or any occasion that calls for a big, satisfying cookie.
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Prep Time 15 minutes
Cook Time 12 minutes
Total Time 27 minutes
Course Snack
Cuisine American
Servings 24 cookies
Calories 562 kcal

Ingredients
  

  • 1⅓ stick unsalted butter (softened)
  • 1 lb peanut butter (about 1¾ cups)
  • 1½ cups brown sugar (packed)
  • 1 cup white sugar
  • 4 large eggs
  • 2½ tsp baking soda
  • 6 cups old-fashioned oats
  • 1 cup semi-sweet chocolate chips
  • 1 cup M&M candies

Instructions
 

Step 1: Cream Butter & Peanut Butter

  • In a large bowl, cream together softened butter and peanut butter until smooth.

Step 2: Add Sugars & Eggs

  • Add brown sugar and white sugar; mix until fluffy.
  • Beat in eggs one at a time until fully incorporated.

Step 3: Mix in Dry Ingredients

  • Stir in baking soda and oats until evenly distributed.

Step 4: Add Mix-ins

  • Fold in chocolate chips and M&M candies.

Step 5: Portion & Bake

  • Using a heaping ¼ cup measure, scoop dough onto ungreased baking sheets.
  • Flatten slightly with the back of a spoon or moist fingers.
  • Bake at 375°F for 10–12 minutes, or until golden brown.

Tips

  • Add ½ cup chopped walnuts or pecans for extra crunch.
  • Substitute butterscotch chips in place of chocolate chips.
  • Use crunchy peanut butter for more texture.
  • Add ½ cup shredded coconut for a chewy variation.
  • Chill dough 30 minutes if cookies spread too much.
  • Swap M&M’s for peanut M&M’s for an extra peanut crunch.
  • Press tops gently with wet fingers (as noted on the back card: “flatten out with spoon or moist fingers”).
  • Make mini cookies using a 2-tablespoon scoop and reduce bake time to 8 to 9 minutes.
  • Freeze cookie dough balls for bake-on-demand treats.

Nutrition

Calories: 562kcalCarbohydrates: 75gProtein: 14gFat: 24gSaturated Fat: 9gPolyunsaturated Fat: 4gMonounsaturated Fat: 8gTrans Fat: 0.2gCholesterol: 43mgSodium: 602mgPotassium: 393mgFiber: 8gSugar: 24gVitamin A: 220IUVitamin C: 0.1mgCalcium: 72mgIron: 4mg
Keyword chocolate chip, homemade treats, M&M cookies, monster cookies, oatmeal cookies, peanut butter cookies, vintage recipe
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