7 oz. 7-Up
2 1/2 c. marshmallows
1 (3 oz.) pkg. lime jello
1 (8 oz.) soft cream cheese
1 can crushed undrained pineapple
1 (8 oz.) Cool Whip
2/3 c. mayo

Boil marshmallows and 7-Up until marshmallows are melted. Add jello. Stir until dissolved. Pour over cream cheese. Blend together. Add pineapple. Chill until partially set up. Mix Cool Whip and mayo into it. Chill and serve. Better if sets overnight.