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Monster Cookie Bars

Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings 12 bars
Calories 350
Deliciously chewy and chocolatey cookie bars packed with oats, peanut butter, and M&M’s, perfect for a sweet treat.

Ingredients

Dry ingredients

  • 2 cups all-purpose flour (spooned and leveled)
  • 2 cups old fashioned oats
  • 1 teaspoon baking soda
  • 1 teaspoon sea salt

Wet ingredients

  • 1 cup unsalted butter (at room temperature)
  • 1 cup creamy peanut butter
  • 1.5 cups packed light brown sugar
  • 0.5 cup granulated sugar
  • 2 large eggs
  • 1 tablespoon vanilla extract
  • 1.25 cups semi-sweet chocolate chips
  • 1.5 cups M&M’s (divided)

For sprinkling

  • to taste flaky sea salt (for sprinkling on bars)

Instructions 

  • Preheat oven to 350°F (175°C). Grease a 9x13-inch pan.
  • Mix dry ingredients in a bowl. Cream butter, peanut butter, and sugars until smooth. Add eggs and vanilla, then combine.
  • Stir in dry ingredients, then fold in chocolate chips and 1 cup of M&M’s. Spread into pan and top with remaining M&M’s.
  • Bake for 25-35 minutes until golden. Cool, sprinkle with sea salt, then cut into bars.

Notes

For best results, do not overbake to keep bars moist and chewy.
Calories: 350kcal
Cost: $15
Course: Dessert
Keyword: bars, chocolate, cookie, peanut butter