It is extremely important that your cream cheese is SOFT. You should pull it out at least 2 hours before making, but 4 hours would be best.
Egg does not need to be at room temperature, but can be.
For more lemony cheesecakes, add in some lemon zest. You could also top these with other pie fillings, chocolate ganache, and more.
Store in the refrigerator for up to 3 days.
The crust will become soft after a day or so in the fridge.