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+ servings
Two monster cookie halves stacked on top of each other.
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Monster Cookies

Our Monster Cookies combine rich peanut butter with the sweet crunch of M&M's and chocolate chips. Brown sugar and vanilla add depth, while old-fashioned oats provide a hearty chew. Perfect for any occasion, these cookies promise a delightful mix of flavors that will leave you craving more.
Prep Time10 minutes
Cook Time12 minutes
Total Time22 minutes
Course: Dessert
Cuisine: American
Keyword: everything cookies, Monster Cookies, the best monster cookies
Servings: 28 cookies
Calories: 396kcal
Author: Polly Conner

Ingredients

  • 1/2 cup (1 stick) unsalted butter softened
  • 1 1/2 cups peanut butter
  • 1 cup brown sugar
  • 1 cup white sugar
  • 2 teaspoons baking soda
  • 3 eggs
  • 2 teaspoons vanilla
  • 1 cup M&M's
  • 1 cup chocolate chips
  • 4 1/2 cups old-fashioned oats Quick oats will work in a pinch.

Instructions

  • Preheat the oven to 325°F and line two large baking sheets with parchment paper (or spray the sheet pans with cooking spray).
  • In a large mixing bowl combine butter, peanut butter, brown sugar, white sugar, baking soda, eggs, and vanilla. Stir until well combined.
  • Stir in the M&Ms, chocolate chips, and the oats.
  • Using a 1/4 measuring cup to scoop dough onto lined baking sheets.
  • Bake for 10-12 minutes (depending on size). They will appear a tad gooey but that's ok!
  • Let cookies cool for at least 30 minutes on baking sheets before removing them. 

Video

Notes

  • You must let them cool down for at least 30 minutes before eating.
  • Do not over bake. They will look undercooked at 10-12 minutes but take them out anyway!
  • While oats are naturally gluten-free, oftentimes they're processed in a factory where cross-contamination can happen. Look for a "certified gluten-free" label on your oats, if avoiding all gluten is important to you.
  • While it's tempting, don't worry about pressing the dough the down after scooping. They'll flatten out on their own. 

Nutrition

Serving: 1cookie | Calories: 396kcal | Carbohydrates: 52g | Protein: 10g | Fat: 18g | Cholesterol: 28mg | Sodium: 155mg | Fiber: 5g | Sugar: 24g