Melt butter in 15 1/2 x 10-1/2 x 1" jelly roll pan. Sprinkle on crumbs (tap sides of the pan to distribute crumbs evenly). Sprinkle on coconut. Distribute candied fruit as evenly as possible over coconut. Cut dates into a small amount of flour so they won't stick together (or use pre-chopped dates). Distribute dates over candied fruit. Sprinkle on nuts. Press mixture lightly with hands to level it in pan. Pour sweetened condensed milk evenly over top. Bake in moderate oven (350 degrees) 25 to 30 minutes. Cool completely before cutting. Remove from pan.