2 (13 1/2 oz.) cans crushed pineapple
1 (3 oz.) pkg. lime Jello
1 (10 1/2 oz.) pkg. mini marshmallows
1 sm. pkg. butter mints, coarsely crushed
1 (9 oz.) Cool Whip
1/2 c. chopped nuts

Mix together pineapple, Jello and marshmallows and let stand overnight or until solid. Fold together the mints, Cool Whip and nuts. Stir well into first mixture. Put into freezer for 2 hours. If cooled in flat pan, cut in squares and serve on lettuce leaves.