Press the biscuit base really firmly into the bottom of the pan to give a firm base for the filling. I use the end of a rolling pin to give me a flat surface to work with. A small glass, the back of a spoon or even clean fingers work just as well too!
You can bake the cheesecake base if you wish. Baking the crust makes it firmer and less crumbly, so it completely depends on the texture you prefer. Once pressed into the tin, bake the crust for about 8 minutes at 180C/350F. Please make sure the base and tin are fully cool before topping with the Baileys cheesecake filling, or you will end up with a melted cheesecake puddle!
The cream cheese should be at room temperature before mixing. Using it at room temperature will ensure the cheesecake filling is smooth and creamy.
When spreading the cheesecake filling in the tin, make sure to gently push it evenly to the edges too, to avoid having any unfilled gaps between the filling and the base.
Once the cheesecake has been removed from the tin and is on the serving plate, gently spread the Baileys ganache over the top, easing it near but not completely to the edges.
Ensure the whipped cream topping is not whisked to stiff peaks. You want it still soft, but firm enough to hold its shape as spread over the cheesecake.