Monster Cookie Bars

These Monster Cookie Bars are everything you could want – soft, chewy, extra thick and filled with peanut butter, oatmeal, chocolate chips and M&Ms. It’s an easy cookie bar recipe that’s faster than making a batch of cookies and impossible to resist. 

Monster Cookie Bars

Ingredients
  • 2/3 cup butter softened
  • 3/4 cup brown sugar
  • 1/2 cup white sugar
  • 2/3 cup peanut butter
  • 1 large eggs
  • 2 teaspoons vanilla extract
  • 1 cup all-purpose flour
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1 1/2 cups old-fashioned oats
  • 2/3 cup chocolate chips plus a few more for sprinkling on top
  • 2/3 cup M&Ms plus a few more for sprinkling on top

Instructions
  • Preheat the oven to 350F degrees. Line a 9x13 inch pan with parchment paper so there's a 1 to 2-inch overhang on all sides, or lightly grease. 
  • In a large bowl beat the butter, brown sugar & white sugar until combined.
  • Mix in the peanut butter, egg & vanilla extract. 
  • Turn the mixer down to low speed and mix in the flour, baking soda & salt.
  • Mix in the oats.
  • Turn off the mixer and stir in the chocolate chips and M&Ms.
  • Press the dough into the bottom of the prepared pan.
  • Bake for 22-25 minutes, or until the tops look set and around the edges is starting to brown. 
  • Cool fully (at least 30 minutes) then cut into bars