Mix cream cheese and yogurt in a bowl until smooth.
Add sugar and lemon juice, then mix again.
Melt gelatin in a double boiler and add to the batter, mixing thoroughly.
Crush biscuits and mix with melted butter, then press onto the bottom of the cake pan.
Pour the cheese batter into the pan and spread evenly.
Chill in the refrigerator for at least 3 hours until set.