1 stick butter
1 1/2 c. graham cracker crumbs
1 can sweetened condensed milk
1 (12 oz.) pkg. semi-sweet chocolate chips
1 c. Reeses Peanut Butter chips

Preheat oven to 350 degrees. Melt butter in 13x9 cake pan. Layer graham cracker crumbs over melted butter. Pour sweetened condensed milk over crumbs evenly. Spread chocolate chips and peanut butter chips over milk; press down firmly. Bake for approximately 20 minutes.