Mound Bars Recipe Original recipe makes 1 -9x13 inch . 2 cups Graham cracker crumbs 1/4 cup white sugar 1/2 cup melted butter Directions Preheat oven to 350 degrees F (175 degrees C). Combine the graham cracker crumbs, sugar and melted butter or margarine. Mix and pat into the bottom of one 9x13 inch baking pan. Bake at 350 degrees F (175 degrees C) for 15 minutes.