1 can condensed milk
1/2 c. lemon juice
1 (10 oz.) can crushed pineapple (well drained)
1 c. chopped nuts
1 lg. tub Cool Whip
2 graham cracker crusts

Beat until stiff, can condensed milk and 1/2 cup lemon juice. Add crushed pineapple; fold in chopped nuts. Fold all ingredients into tub of thawed Cool Whip. Pour in graham cracker crusts. Cool over night in refrigerator.