1/4 c. butter
1 c. graham cracker crumbs
3/4 c. sweetened condensed milk
1 c. (6 oz. pkg.) chocolate chips
2 c. miniature marshmallows

Preheat oven to 350 degrees (325 degrees for a glass pan). Put the butter into the baking pan and place it in the oven for 3 minutes or until melted. Take the pan out of the oven, and sprinkle the graham cracker crumbs evenly over the melted butter. Pour the milk over the crumbs. Sprinkle the chips evenly over the milk. Spread the marshmallows in a layer over the chips, pressing down evenly. Bake for 30 minutes. Cool completely before cutting. Yield: 16 squares.