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Christmas Monster Cookies

Christmas Monster Cookies

Patricia Collins
These Christmas Monster Cookies are soft, chewy, and packed with peanut butter, oats, chocolate chips, and festive holiday M&M’s. Perfect for cookie swaps, gifting, or baking with kids, these colorful cookies bring big Christmas cheer with minimal effort.
Prep Time 15 minutes
Cook Time 12 minutes
Total Time 27 minutes
Servings 24 cookies
Calories 180 kcal

Ingredients
  

  • ½ cup salted butter
  • ¼ cup peanut butter
  • ½ cup granulated sugar
  • ½ cup brown sugar
  • 2 eggs
  • 2 teaspoon vanilla extract
  • 1 ½ cups all-purpose flour
  • 1 cup old fashioned oats
  • 1 teaspoon salt
  • 1 teaspoon baking soda
  • ½ cup mini chocolate chips
  • ½ cup mini M&M's red and green for Christmas

Instructions
 

  • Preheat oven to 350°F (175°C).
  • In a large bowl, cream butter, peanut butter, granulated sugar, and brown sugar until smooth and fluffy.
  • Beat in eggs one at a time, then add vanilla.
  • In a separate bowl, whisk flour, oats, salt, and baking soda.
  • Slowly add dry ingredients to wet mixture until just combined.
  • Fold in mini chocolate chips and mini M&M’s.
  • Scoop rounded tablespoons of dough onto an ungreased baking sheet, spacing 2 inches apart.
  • Bake 10–12 minutes or until edges are golden.
  • Cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.

Notes

  • Use room-temperature butter for easier creaming and a better cookie texture.
  • Chill dough for 30 minutes for thicker cookies that spread less.
  • Press a few extra M&M’s on top of each dough ball before baking for bakery-style presentation.
  • Replace peanut butter with almond or sunflower butter if needed.
  • Cookies freeze well for up to 3 months.