Prepare the crust: Start by placing the digestive biscuits into a large mixing bowl. Crush the biscuits into fine crumbs using a rolling pin or a food processor. You want the crumbs to be as fine as possible, as this will give the crust a smooth texture. Add the melted butter to the crumbs and mix thoroughly until all the crumbs are evenly coated with butter. The butter acts as a binding agent to help the crust hold together. Press the mixture firmly into the bottom of a 9-inch springform pan, making sure the layer is even. Use the back of a spoon to press down the crumbs tightly, creating a solid base for the cheesecake filling.
Make the cheesecake filling: In a large bowl, beat the softened cream cheese until it is smooth and creamy. This is the base of your cheesecake, so ensure that the cream cheese is well-softened to avoid lumps. Gradually add in the Baileys Irish Cream, mixing continuously to combine. The Baileys will give the cheesecake its signature flavor, adding a subtle richness that complements the cream cheese beautifully. Next, add the powdered sugar and beat until the mixture is smooth and well-incorporated. The powdered sugar sweetens the filling without adding any grittiness, helping to achieve the perfect creamy consistency.
Assemble the cheesecake: Pour the cream cheese mixture over the prepared digestive biscuit crust in the springform pan. Use a spatula to spread the mixture evenly across the crust, smoothing out the top. This will create a uniform surface for your cheesecake. Be gentle when spreading the mixture so the crust remains intact, and make sure the filling reaches all the edges of the pan.
Chill the cheesecake: Refrigerate the cheesecake for at least 4 hours to allow it to set. This chilling time helps the filling firm up and achieve the proper texture. If you’re in a hurry, you can place the cheesecake in the freezer for about 1 hour to speed up the setting process. However, allowing it to chill in the refrigerator overnight will give the best results, as it will allow the flavors to meld together and the cheesecake to fully set.
