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large cookies with green and red m&ms
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Christmas Monster Cookies

My Christmas Monster Cookies are a festive twist on the classic monster cookie, bringing together the beloved elements of oats, peanut butter, mini chocolate chips and studded with holiday red and green M&Ms. They are soft, chewy and will be perfect to be left out for Santa this holiday season!
Course Dessert
Cuisine American
Prep Time 25 minutes
Cook Time 10 minutes
Total Time 35 minutes
Servings 24 cookies
Calories 169kcal

Ingredients

  • 1 1/3 cups all purpose flour, spooned and leveled
  • 1 cup quick oats
  • 1 tsp. baking soda
  • 3/4 tsp. kosher salt
  • 1/2 cup unsalted butter, softened
  • 1/2 cup creamy peanut butter (like Skippy or Jif)
  • 3/4 cup light brown sugar, packed
  • 1/2 cup granulated sugar
  • 1 large egg + 1 egg yolk, room temperature, lightly beaten
  • 1 Tbsp. whole milk
  • 2 tsp. vanilla extract
  • 1 cup red and green M&Ms + more for garnishing the tops
  • 1/2 cup mini chocolate chips
  • flaky sea salt, for finishing

Instructions

  • Line 2 baking sheets with parchment paper or Silpat baking mats.
  • Whisk together the dry ingredients in a medium sized mixing bowl and set aside.
    1 1/3 cups all purpose flour, spooned and leveled, 1 cup quick oats, 1 tsp. baking soda, 3/4 tsp. kosher salt
    whisk with dry cookie ingredients in a clear bowl
  • In a stand mixer fitted with the paddle attachment, cream together the butter, peanut butter, brown sugar, and granulated sugar on medium-high speed until light and fluffy, ~3-4 minutes, scraping down the sides of the mixing bowl as needed.
    1/2 cup unsalted butter, softened, 1/2 cup creamy peanut butter (like Skippy or Jif), 3/4 cup light brown sugar, packed, 1/2 cup granulated sugar
    sugar, peanut butter, and butter in a clear bowl
  • Add in the egg and yolk, milk and vanilla, mix again until combined, once again scraping down sides of the bowl as needed.
    1 large egg + 1 egg yolk, room temperature, lightly beaten, 1 Tbsp. whole milk, 2 tsp. vanilla extract
    hand adding white ingredients to cookie dough mixture
  • Slowly add in the dry ingredients, mixing just until combined. The dough will be really light/fluffy/airy but shouldn’t be overly sticky. 
    adding powdered ingredients to cookie dough mixture
  • Add in the M&Ms and chocolate chips and fold in with a spatula, being careful not to over mix. 
    1 cup red and green M&Ms + more for garnishing the tops, 1/2 cup mini chocolate chips
    pouring red & green m&ms into cookie dough mixture
  • Let the dough rest at room temperature for 20 minutes or in fridge is OK too! This brief rest period will allow the flour to hydrate the dough and help us get a soft and chewy cookie.
    red and green m&ms mixed in cookie dough in a clear bowl
  • Preheat the oven to 350°F.  Scoop the cookie dough with a 2 Tbsp. scoop (should yield ~24 cookies). Place on prepared baking sheets. Press a few more festive M&Ms on top of the cookies.
    six balls of christmas monster cookie dough
  • Bake for 9-11 minutes (I like to go slightly underbaked for a delicious chewy cookie, the edges should be a light golden brown and centers still a little gooey looking, they will continue to bake on baking sheet when removed from oven). Swirl a cup around the cookies when still warm if needed to make perfect circles. 
    six partially baked cookies with red and green m&ms on a baking sheet
  • Let them rest on the cookie sheet for a few minutes then transfer to a wire rack to cool completely. Garnish with flaky sea salt and enjoy. 
    large monster cookies with red and green m&ms

Video

Notes

  • Store these Christmas Monster cookies in a sealed container at room temperature for up to 5 days, or in the freezer for up to 3 months. 

Nutrition

Serving: 1cookie | Calories: 169kcal | Carbohydrates: 22g | Protein: 3g | Fat: 8g | Saturated Fat: 2g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 3g | Trans Fat: 0.01g | Cholesterol: 8mg | Sodium: 192mg | Potassium: 65mg | Fiber: 1g | Sugar: 14g | Vitamin A: 190IU | Vitamin C: 0.03mg | Calcium: 19mg | Iron: 1mg