Print

Christmas Monster Cookies Recipe

3.9 from 59 reviews

Delight in these festive Christmas Monster Cookies packed with holiday M&M’s, crunchy pretzels, and a blend of chocolate chunks. Soft, chewy, and bursting with flavor, these cookies are perfect for holiday gatherings or a cozy winter treat.

Ingredients

Scale

Wet Ingredients

  • 1 cup unsalted butter (2 sticks, at room temperature)
  • 3/4 cup dark brown sugar (packed)
  • 1/2 cup granulated sugar
  • 2 tsp vanilla extract
  • 2 large eggs
  • 1 large egg yolk

Dry Ingredients

  • 2 cups all-purpose flour
  • 1 tsp baking soda
  • 1/2 tsp baking powder
  • 1 tsp salt
  • 1 cup old fashioned oats

Mix-ins

  • 1 1/4 cups holiday M&M’s (red and green, divided)
  • 1 cup salted pretzel twists (broken into pieces)
  • 1 cup semi-sweet chocolate chunks (or dark chocolate chunks)
  • 1/2 cup white chocolate chips

Instructions

  1. Preheat oven: Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper to prevent sticking and ensure easy cleanup.
  2. Cream butter and sugars: In a large mixing bowl, beat together the room temperature unsalted butter, dark brown sugar, granulated sugar, and vanilla extract until the mixture is smooth and well combined.
  3. Add eggs: Beat in the two large eggs followed by the additional egg yolk one at a time, ensuring each is fully incorporated before adding the next.
  4. Combine dry ingredients: In a separate bowl, mix all-purpose flour, baking soda, baking powder, and salt. Gradually add this dry mixture to the wet ingredients and beat until just combined, then stir in the old fashioned oats.
  5. Fold in mix-ins: Gently fold in 1 cup of the holiday M&M’s, broken pretzel twists, semi-sweet chocolate chunks, and white chocolate chips until evenly distributed.
  6. Shape cookies: Roll the dough into 1/4 cup sized balls and place them at least 3 inches apart on the prepared baking sheets to allow spreading.
  7. First bake: Bake the cookies in the preheated oven for 8 minutes, then rotate the pans to ensure even baking and continue baking for an additional 2 minutes.
  8. Add remaining M&M’s: Remove the baking sheets from the oven, press the remaining 1/4 cup of M&M’s into the tops of the cookies, then return to the oven and bake for another 2 to 3 minutes until the cookies are golden and set.
  9. Cool: Remove the cookies from the oven and allow them to cool on the baking sheet. They will continue to cook slightly and firm up as they cool.
  10. Serve: Enjoy the cookies warm for the best flavor and texture, or let them cool completely before storing in an airtight container.

Notes

  • For perfectly shaped cookies, measure dough balls with a 1/4 cup scoop.
  • Room temperature butter helps achieve a better texture when creaming with sugars.
  • Pressing M&M’s onto the cookie tops after initial baking prevents them from melting completely and keeps the festive colors vibrant.
  • Cookies can be stored in an airtight container at room temperature for up to 5 days.
  • To keep cookies fresh longer, freeze baked cookies in an airtight container for up to 3 months.

Keywords: Christmas cookies, holiday cookies, monster cookies, festive cookies, chocolate chunk cookies, oatmeal cookies, M&M cookies