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Classic Monster Cookies Recipe


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4.2 from 38 reviews

  • Author: Ezabella
  • Total Time: 27 minutes
  • Yield: 6 servings (about 36 cookies, assuming 6 cookies per serving)

Description

Classic Monster Cookies are thick, chewy, and loaded with peanut butter, oats, chocolate chips, walnuts, and colorful M&Ms. These cookies combine a rich blend of flavors and textures, perfect for satisfying any sweet tooth craving. Easy to make and ideal for sharing, they bring a nostalgic twist to your cookie collection.


Ingredients

Wet Ingredients

  • ½ cup salted butter, at room temperature
  • 6 eggs
  • 2 tablespoons vanilla extract
  • 2 ⅔ cups peanut butter

Dry Ingredients

  • 2 ¼ cups brown sugar
  • 2 cups granulated sugar
  • 4 teaspoons baking soda
  • 9 cups quick oats

Add-ins

  • 1+ cup chocolate chips
  • 1 cup chopped walnuts
  • ½ pound M&Ms, plus more to garnish


Instructions

  1. Preheat Oven: Preheat your oven to 350ºF (175ºC). Line baking sheets with parchment paper to prevent the cookies from sticking and set them aside.
  2. Cream Butter and Sugars: In a large mixing bowl, blend the softened butter with both the brown sugar and granulated sugar until smooth and creamy to create the base of your cookie dough.
  3. Add Eggs and Flavorings: Mix in the eggs one at a time to incorporate fully, then add the vanilla extract and peanut butter, blending everything until the mixture is uniform.
  4. Combine Dry Ingredients: Stir in the baking soda thoroughly to ensure even leavening throughout the dough.
  5. Mix in Oats and Add-ins: Fold in the quick oats, chocolate chips, chopped walnuts, and M&Ms gently to distribute them evenly without breaking up the mix-ins.
  6. Shape Cookies: Using a spoon or cookie scoop, scoop out rounded tablespoons of dough and space them evenly onto the prepared parchment-lined baking sheets.
  7. Bake: Place the trays in the preheated oven and bake the cookies for 10-12 minutes, or until they turn golden around the edges.
  8. Cool and Serve: Remove the cookies from the oven and transfer them to a wire rack to cool completely before serving or storing.

Notes

  • For larger cookies, increase the baking time accordingly by a few minutes and monitor closely to avoid burning.
  • Ensure the butter is at room temperature for smooth blending.
  • Use quick oats for the best texture; rolled oats may affect the chewiness.
  • You can substitute walnuts with pecans or omit nuts for a nut-free version.
  • Store cookies in an airtight container at room temperature for up to a week.
  • Prep Time: 15 minutes
  • Cook Time: 12 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American