I found this recipe in the Detroit Free Press at least 20 years ago and have held on to it until the right time to make them...the grandkids and kids love chocolate and peanut butter, and these are great because they're a no bake cookie tasting like Reese's Peanut Butter cups.
3/4 cup butter, melted
2 cups graham cracker crumbs
1 12oz jar chunky peanut butter
2 cups powdered sugar
1 12 oz bag milk chocolate chips, melted
Combine butter and graham crumbs. Beat in the peanut butter and sugar. Spread evenly in a 9 x13 inch pan. Frost completely with the melted chocolate. Let cool before cutting in squares. (After cutting the squares I put the pan in the refrigerator to firm up even more before taking them out) Gooey, chocolately, and oh sooo good!!