Go Back
+ servings
These easy Christmas cookies are loaded with peanut butter, Oreo cookies, and peanut butter m&m candies! Perfect holiday dessert!

Peanut Butter Oreo Christmas Cookie Bars

Who is ready for a new easy Christmas cookie bar recipe? I know I am - it's officially Christmas season! Let's get baking! These peanut butter oatmeal bars are loaded with Oreo cookies and peanut butter m&m candies!
Course Dessert
Cuisine American
Keyword easy bar recipes, easy Christmas recipes, holiday recipes
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings 12 bars
Calories 415kcal


  • 1/2 cup butter softened
  • 1/2 cup peanut butter
  • 3/4 cup brown sugar
  • 1/4 cup white sugar
  • 1 large egg
  • 1 teaspoon vanilla
  • 1 1/4 cups flour
  • 1/2 cup instant oats
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1 cup peanut butter m&m candies
  • 1 cup Oreo cookie chunks


  • Preheat oven to 350 degrees and line an 8x8 baking dish with parchment paper or foil.
  • In the bowl of a stand mixer, cream together the butter, peanut butter, and sugars until light and fluffy. Beat in the egg. Stir in the vanilla.
  • In a medium bowl, combine the flour, oats, baking soda, and salt. Gradually add to the creamed mixture and beat until well combined.
  • Stir in the m&m candies and cookies.
  • Spread batter into prepared pan. Bake for 20 minutes or until edges are golden and a toothpick comes out clean.
  • Cool for at least 15 minutes before cutting and serving.



Calories: 415kcal | Carbohydrates: 53g | Protein: 6g | Fat: 20g | Saturated Fat: 9g | Cholesterol: 38mg | Sodium: 339mg | Potassium: 148mg | Fiber: 2g | Sugar: 34g | Vitamin A: 300IU | Vitamin C: 0.1mg | Calcium: 47mg | Iron: 2.5mg