For the Base
- 85ml butter melted, plus extra for tin
- 140g digestive biscuits , made into fine crumbs
- 1 tbsp sugar , granulated or golden caster
For the cheesecake filling
- 900g pack full fat soft cheese
- 250g golden caster sugar
- 3 tbsp plain flour
- 1½ tsp vanilla extract
- finely grated zest of 1 lemon(about 2 tsp)
- 1½ tsp lemon juice
- 3 large eggs, plus 1 yolk
- 300ml carton soured cream
- Baileys 2 shots worth (optional)
For the Sour Cream Topping
- 150ml carton soured cream
- 1 tbsp golden caster sugar
- 2 tsp lemon juice
- Preheat the oven to fan 200C/conventional or 180C/gas 4. Line the base of a 23cm spring form cake tin with parchment paper. For the crust, melt the butter in a medium pan. Stir in the biscuit crumbs and sugar so the mixture is evenly moistened. Press the mixture into the bottom of the pan
- For the filling, increase the oven temperature to fan 200C/conventional 240C/gas 9. Gently beat the soft cheese until creamy, about 2 minutes. Gradually add the sugar, then the flour and a pinch of salt, scraping down the sides of the bowl and the paddle twice.
- Now move to a whisk. Continue by adding the vanilla, lemon zest and juice. Whisk in the eggs and yolk, one at a time, scraping the bowl and whisk at least twice. add the 300ml carton of soured cream until smooth, Continue on low speed as you add the measured soured cream. Whisk to blend, but don’t over-beat. The batter should be smooth, light and somewhat airy.
- Brush the sides of the spring form tin with melted butter and put on a baking sheet. Pour in the filling – if there are any lumps, sink them using a knife – the top should be as smooth as possible. Bake for 10 minutes. Reduce oven temperature to fan 90C/conventional 110C/gas 1⁄4 and bake for 25-35 minutes more. If you gently shake the tin, the filling should have a slight wobble. Turn off the oven and open the oven door for a cheesecake that’s creamy in the centre, or leave it closed if you prefer a drier texture. Let cool in the oven for 2 hours. The cheesecake may get a slight crack on top as it cools.
- Combine the reserved soured cream with the 142ml carton, the sugar and lemon juice for the topping. Spread over the cheesecake right to the edges. Cover loosely with foil and refrigerate for at least 8 hours or overnight.
- Run a round-bladed knife around the sides of the tin to loosen any stuck edges. Unlock the side, slide the cheesecake off the bottom of the tin onto a plate, then slide the parchment paper out from underneath.