1 can condensed milk
1 med. lemon, squeezed
1 (9 oz.) bowl of Cool Whip
1 lg. can crushed pineapple
1 c. chopped nuts

Mix lemon juice and condensed milk. Let stand until thick. Add pineapple and nuts; mix. Fold in Cool Whip. Beat until light and fluffy. Place in graham cracker crust; sprinkle with chopped nuts. Put in freezer until firm.