1 stick butter
1 1/2 c. graham cracker crumbs
12 oz. semi-sweet chocolate chips
6 oz. butterscotch chips
1 can sweetened condensed milk

Preheat oven to 350 degrees. Melt butter and pour into 9 x 13 inch pan. Pour graham cracker crumbs into butter, stir until crumbs are coated. Press into bottom of pan so that bottom is covered. Sprinkle half of the chocolate chips on crumbs. Sprinkle all of the butterscotch chips over chocolate chips then sprinkle on remaining chocolate chips. Pour sweetened condensed milk evenly over mixture. Bake for 20 to 25 minutes or until top is golden brown and slightly bubbly.