I got the recipe from JensFavoriteCookies
1 1/4 cups peanut butter
1 cup butter
2 cups powdered sugar
2 cups crushed graham crackers
1 1/2 cups chocolate chips
1. In a bowl melt 1 cup butter with 1 cup peanut butter until melted. Add the graham cracker crumbs and powdered sugar to the melted butter and peanut butter mixture. Spread mixture evenly in a 9x13 pan.
2. Melt the chocolate chips with 1/4 cup peanut butter in the microwave 30 seconds at a time until melted, stirring in between. In my microwave it only took one minute to completely melt the chocolate and peanut butter.
3. Pour chocolate mixture over the bars, spreading evenly over the top.
4. Chill 40-50 minutes until the chocolate sets.