1 box of lemon cake mix (I got the "extra moist" kind)
1/3 cup vegetable oil
8 oz cream cheese
1 Tbsp lemon juice
1 cup sugar
Combine cake mix, oil and 1 egg until crumbly. Reserve 1 cup of the mixture and set aside. Spread remainder of the crumbs in a 9x13 pan and pat down firmly to form a crust.
Bake at 350º for about 10 minutes or until crust is lightly golden brown.
In a bowl, mix remaining ingredients and whip until fluffy and white (that's important)
Spread over the crumb crust and crumble the reserved cup of crumbs over the tip. Return to the oven and bake for another 25 minutes.
Cool before cutting.
Source: Favorite Family Recipes