You will need:
1 (3 ounce) package lemon Jell-O
1 cup boiling water
8 ounces cream cheese
1 cup granulated sugar
4 Tablespoons lemon juice ( less if you don’t want to much lemon)
1 can Carnation Evaporated milk, well chilled
Graham crackers, crushed
Dissolve Jell-O in boiling water. Cool until slightly thickened.
Beat cream cheese, sugar and lemon juice with mixer until smooth. Add thickened Jell-O and beat well.
In a separate bowl, beat the Carnation milk until fluffy. Add cream cheese/Jell-O mixture and beat well with mixer.
Line bottom of 9 x 13-pan with crushed Graham crackers.
Spread filling over and top with more crushed Graham crackers. Chill.
Source : allrecipes.com