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Christmas Monster Cookies

These chewy Christmas Monster Cookies are packed with chocolate chips, holiday M&Ms, salty pretzels, and marshmallow bits for a fun, festive cookie.
Prep Time15 minutes
Course: Dessert
Keyword: christmas kitchen sink cookies, christmas monster cookies

Equipment

  • 1 3-tablespoon cookie scoop

Ingredients

  • 1 cup unsalted butter (2 sticks) room temperature
  • 1 cup dark brown sugar packed
  • ½ cup granulated sugar
  • 2 large eggs
  • 1 egg yolk
  • 2 teaspoon vanilla extract
  • 2 cups all purpose flour spooned and leveled
  • 1.5 cups old-fashioned rolled oats
  • 1 teaspoon kosher salt
  • 1 teaspoon baking soda
  • ½ teaspoon baking powder
  • 1 ¼ cups holiday M&Ms
  • 1 cup mini pretzels broken into small pieces
  • ½ cup mini semisweet chocolate chips
  • ½ cup dark chocolate chips coarsely chopped
  • ½ cup dehydrated marshmallow bits
  • ¼ cup holiday sprinkles

Instructions

  • Preheat the oven to 350 degrees F. Cream the butter, brown sugar, and granulated sugar until combined and fluffy. Mix in the egg, additional yolk, and vanilla.
  • In a separate bowl, combine the flour, baking soda, baking powder, and salt. Mix the dry ingredients into the wet ingredients until just combined. Add the oats and stir together.
  • Fold in the M&Ms, mallow bits, sprinkles, chocolate chips, and pretzels.
  • Use a large 3-tablespoon cookie scoop. Use your hands to round out the dough balls, and add them to the baking sheet about 3 inches apart. Feel free to add a couple of extra toppings on top.
  • Bake in the preheated oven to about 14 minutes, or until the edges are lightly browned and set and the top is soft. Let rest on the baking sheet for a few minutes before transferring to a wire rack to cool completely.