Reese's Peanut Butter Bars

I love peanut butter bars. I'm not sure why I don't make them more often. I found this recipe on Pinterest and it came from HERE. They were super easy and fast.

Reese’s Peanut Butter Bars
(from Let’s Dish)

Ingredients
1 cup butter melted
2 cups graham cracker crumbs (use the boxed kind, or grind them in a food processor. Tiny granules.) 2 cups confectioners’ sugar
1 cup + 4 tablespoons peanut butter
1 1/2 cups semisweet chocolate chips

Directions In a medium bowl, mix together the melted butter, graham cracker crumbs, confectioners’ sugar, and 1 cup peanut butter until well blended. Press evenly into the bottom of an ungreased 9×13 inch pan. In a metal bowl over simmering water, or in the microwave, melt the chocolate chips with the peanut butter, stirring occasionally until smooth. Spread over the peanut butter layer. Refrigerate for at least one hour before cutting into squares.