1 (16 ounce) package graham crackers, crumbled
1 cup melted butter
2 1/2 cups peanut butter
2 1/2 cups confectioners' sugar
2 cups semisweet chocolate chips
1 (14 ounce) can sweetened condensed milk

Grease a 9x13 inch pan.

Mix graham cracker crumbs, butter, peanut butter and powdered sugar together in a large mixing bowl.
Press the mixture into the prepared pan.

In a small pot melt chocolate chips and condensed milk together over a low heat.
Stir until well mixed.
Spread the chocolate mixture over the peanut butter mixture.
Chill the cookie−bars for 4 hours.

Cut and serve.