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Peanut Butter Chocolate Bars

Ingredients

Cookie Base

  • 1 cup butter at room temperature
  • 1 cup granulated sugar
  • 2 cups brown sugar
  • 1 1/2 cups peanut butter chunky or smooth
  • 3 eggs
  • 2 teaspoons vanilla
  • 1 1/2 teaspoons baking soda
  • 1/2 teaspoon table salt
  • 3 cups all purpose flour
  • 3 cups quick oats

Fudge Frosting

  • 4 cups powdered sugar
  • 1/2 cup cocoa powder
  • 1/4 teaspoon table salt
  • 1/3 cup butter softened
  • 1/3 cup boiling water
  • 1 teaspoon vanilla extract

Instructions

  1. Preheat oven to 350 degrees.  Spray a rimmed cookie sheet (standard half-sheet pan) lightly with non-stick spray and set aside.
  2. Cream butter and sugars for 2-3 minutes, until light and fluffy.  Add  peanut butter and vanilla and beat until combined.  Add eggs, one at a time and beat between each addition. Combine flour, baking soda, and salt and add mixture to dough.  Beat to combine.  Add oats and mix until incorporated.  Press dough into prepared pan into a flat layer.  Bake for about 10-12 minutes.  The center should be puffed and set, but still soft.
  3. While crust is baking, prepare frosting.  Whisk together powdered sugar, cocoa powder and salt.  Add butter (make sure it’s soft!), boiling water (I ended up using 1/2 cup), and vanilla.  Beat until smooth and glossy.
  4. When cookie crust is done baking, pour frosting on top and spread. Let cool (or dig right in) and cut into squares to serve. Enjoy!