Reese's Peanut Butter Squares

1 cup creamy peanut butter
2 cubes melted butter
1 1/2 cups graham cracker crumbs
2 1/3 powder sugar
2 cup milk chocolate chips

Mix all of the ingredients except for the chocolate chips. Press in a greased and floured 9x13 pan. Melt chocolate chips pour over the peanut butter mixture.

Yummy!