Go Back
–+ servings
Monster Cookie Bars

Monster Cookie Bars

With a buttery oatmeal crumble, a soft & creamy peanut buttery filling and plenty of M&M's, these bars will be gone in an instant!
No ratings yet
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 1 hour 5 minutes
Course Dessert, Snack
Cuisine American
Servings 24 squares

Ingredients
  

  • 2 1/2 cups quick oats
  • 1 1/2 cups flour
  • 1 cup brown sugar
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup butter melted
  • 1/3 cup creamy peanut butter
  • 1 egg
  • 1 cup M&M candies mini or regular sized
  • 1 cup semi-sweet chocolate chips
  • 1 14-ounce can sweetened condensed milk
  • 1/3 cup creamy peanut butter

Instructions
 

  • Preheat oven to 350 and grease a 9x13-inch pan with cooking spray or line with parchment paper.
  • Combine the oats, flour, brown sugar, soda, and salt and mix well.
  • Stir in the melted butter, peanut butter and egg.
  • Stir in the chocolate chips and M&M's.
  • Press all but 1 1/2 cups of the oatmeal mixture into a greased 9x13 pan. (Set the 1 1/2 cups aside for later.)
  • Stir together the sweetened condensed milk and peanut butter and drizzle over the bottom crust. Spread gently to evenly coat.
  • Sprinkle the remaining oatmeal mixture on top and lightly press down.
  • Bake 20-25 minutes or until a light golden brown. The middle should be slightly wiggly! It will firm up as the bars cool.
  • Let the bars cool for 30 minutes before cutting into squares.

Notes

With a buttery oatmeal crumble, a soft & creamy peanut buttery filling and plenty of M&M's, these bars will be gone in an instant!
Keyword baking, Cookie Bars, Monster Cookie Bars, treat
Tried this recipe?Let us know how it was!