BEST recipe ever (and probably the most common, it's off the Philly box) - I have been making this for years & everyone loves it. My kids don't consider anythign else to be cheesecake

2 x 250g blocks of Philadelphia cheese, softened to room temp
1 x time sweetened condensed milk
1/3 cup of lemon juice
1 teaspoon of gelatine, dissolved in 1/4 cup of boiling water
1 pack of biscuits, crushed
butter (maybe 1/3 cup?

Melt butter, mix with crushed biscuits. Press into base of pan & refrigerate while you prepare the filling.

Beat philly cheese until soft. Add condensed milk & beat until well mixed. Add lemon juice and and beat. Dissolve gelatine in water and add. Beat well.

Pour mix into prepared base, refrigerate overnight or for at least 6 - 8 hours. YUM.

ETA - the amounts are a bit approximate, I have been doing this so long now I don't use the recipe. When I mix the biscuits & butter, I add the butter gradually until I have it well moistened - I'm not sure exactly how much to use. And I think the original recipe called for one block of cheese, but I have always used two.
You can add grated lemon rind to the mix, makes it more zesty, and it is awesome with fresh fruit on top.

Mmmm, makes me want cheesecake!