Chocolate Peanut Butter Bars

I have been searching for a great peanut butter bar recipe. In college I remember having a few black sharpie fights in order to either confiscate or claim my friend Erica's peanut butter bars. They were usually being held hostage by Dave. I still haven't found a recipe that requires sharpie fighting, but this one is close.

Adapted from Once Upon a Plate

Ingredients:

3/4 cup butter

3/4 cup brown sugar

3/4 cup granulated sugar

3/4 cup peanut butter, smooth or chunky

2 eggs

1 teaspoon vanilla extract

3/4 teaspoon baking soda

1 1/2 cups flour

1 1/2 cups rolled oats (regular or old fashioned)

Topping:

3/4 cup peanut butter

1 cup granulated sugar

1/2 cup heavy cream or evaporated milk

5 tablespoons butter

1 cup chocolate chips

Directions:

Position oven rack to center position. Preheat oven to 350 degrees. Grease a 10 x 15 inch baking pan, set aside.

In a medium-sized bowl whisk together flour, baking soda and salt. Set aside.

Cream together butter, brown sugar, granulated sugar, and peanut butter in a large mixing bowl. Add eggs and vanilla to butter mixture; beat until combined. Add flour in 2 additions, mix well but do not over-beat. Stir in oats by hand until evenly distributed.

Spread mixture evenly into prepared baking pan. Bake for 20 minutes until golden brown and slightly firm. Remove from oven and quickly place spoonfuls of the 3/4 cup peanut butter on the surface. As the peanut butter melts, spread evenly with a knife. Allow to cool completely. When cool, make the chocolate topping.

Bring sugar, cream and butter to a full rolling boil. Boil for 45 seconds. Remove pan from heat and add the chocolate chips. Whisk gently or stir until chocolate mixture is smooth. As soon as mixture is smooth, pour evenly over the cooled cookie and peanut butter base. Allow chocolate to set up and harden. When set, cut into squares and serve.