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+ servings
Monster Cookie Bars

Monster Cookie Bars

If you are looking for more yummy bar recipes then these Monster Cookie Bars are perfect. Peanut butter & oats come together into an easy cookie bar recipe that is absolutely delicious!
Course Dessert
Cuisine American
Keyword bar recipes, chocolate, chocolate chip, oats
Prep Time 7 minutes
Cook Time 18 minutes
Total Time 25 minutes
Servings 20 bars


  • 1 cup brown sugar
  • 1 cup granulated sugar
  • ½ cup margarine
  • 3 eggs
  • 1 tbsp vanilla extract
  • cups creamy peanut butter
  • cups quick-cook oats
  • 1 tsp baking soda
  • 3 cups candy coated chocolate candies M&M's
  • 1 cup dark chocolate chips


  • Preheat the oven to 350 degrees.
  • In the bowl of an electric mixer, combine sugars & margarine & beat until just combined.
  • Add eggs & vanilla - mix.
  • Add peanut butter - mix.
  • Slowly mix in oats & baking soda & mix well.
  • Fold in chocolate chips & most of the candies - reserving a handful to adding to the top once baked.
  • Spread out into an even layer on a 4 sided baking sheet (either non-stick or lined with parchment) - pressing flat with your fingers or a spatula.
  • Bake for 15-18 minutes or until golden. Press the remaining candy into the top immediately after removing from the oven before they cool.
  • Allow to cool in pan before cutting.