- Preheat oven to 350° F - Place butter in 13x9x2 inch baking pan; place in oven until melted. - Remove pan from oven; sprinkle crumbs evenly over butter and press down with fork. - Layer 1 cup of peanut butter chips over crumbs; sprinkle coconut over peanut butter chips; layer remaining 2/3 cup of peanut butter chips over coconut. - Drizzle sweetened condensed milk evenly over top. - Bake 20 minutes or until lightly browned. Remove from oven. - In small microwave safe bowl, place chocolate chips and shortening, microwave at high (100%) for 60 to 90 seconds or until chips are melted when stirred. Drizzle evenly over bars. - Cool completely in pan on wire rack. - Cut into bars. Makes about four dozen bars unless cut into larger portions.