5 c. Ritz crackers
1/2 c. butter, melted
1 (13 1/2 oz.) carton Cool Whip
12 oz. can frozen lemonade concentrate, thawed
1 can Eagle Brand sweetened condensed milk

Crush crackers, mix with butter. Pat in 9 x 13 pan. Save 1/2 cup for top. Mix Cool Whip, lemonade, and milk; pour over crumbs. Top with remaining crumbs.