9 inch graham cracker crust, baked at 350 degrees for 8 minutes then cool
1 can Eagle Brand sweetened condensed milk
1/2 c. bottled lime juice
3 or 4 drops green food coloring

Mix milk and lime juice thoroughly by hand. Add food coloring. Fold in Cool Whip. Pour into 9 inch crust and freeze. Thaw about 20 minutes before serving.