Begin by weighing out your ingredients
Add the 200g of digestive biscuits to a food processor and pulse until uniform crumbs form - around 6 pulses should do it.
Set the crumbs aside in a large bowl and begin melting the unsalted butter over medium-low heat
Once the butter is melted, add it to the digestive crumbs and stir well until the mixture resembles wet sand
Press the mixture into the 9-inch springform pan until nicely compacted and flattened using the back of a spoon or the bottom of a small saucepan.
Set aside in the fridge to allow the base to set - this shouldnt take too long, around 15 minutes
To make the cheesecake filling add the cream cheese to a large bowl and sieve in the icing sugar. Add the vanilla extract.
Beat in the icing sugar using a hand whisk or an electric whisk/stand mixer with beater attachment on slow speed until the mixture is uniform and smooth and just combined.
Spread the mixture over the set biscuit base and smooth over with an offset spatula to create a level finish
Leave the cheesecake overnight to fully set before slicing