- Heat oven to 200C/180C fan/gas 6. Line the base and sides of a 23cm springform tin with baking parchment. Bash the biscuits and 75g of the flaked almonds to crumbs – try double-bagging in food bags and crushing with a rolling pin. Mix with the almond extract and melted butter, then press into the base of the prepared tin and bake for 10 mins. Set aside to cool while you make the filling.
- In your largest bowl, whisk the cheese with an electric whisk until creamy. Add the sugar and whisk to combine. Whisk in the flour, then the vanilla, the eggs, one at a time, and finally the soured cream.
- Dollop spoonfuls of mixture into the tin, dotting in tbsps of jam as you go. Smooth the top as gently as you can.
- Carefully place tin on the middle shelf of the oven and bake for 10 mins. Scatter with remaining almonds. Decrease oven to 110C/90C fan/gas ¼ and bake for a further 35 mins. Turn off the oven, keep the door closed and leave cheesecake to cool for 1 hr. Open oven door and leave it ajar for another hour (you can use your oven gloves to wedge it open). Cool for a third hour at room temp, then cover and chill overnight.
- Remove from the tin and carefully peel off the parchment. Dust with icing sugar and serve with cream.
- Oil and line a 20cm round loose- bottomed cake tin with cling film, making it as smooth as possible. Melt the butter in a pan. Crush the biscuits by bashing them in a bag with a rolling pin, then stir them into the butter until very well coated. Press the mixture firmly into the base of the tin and chill.
- Soak the gelatine in water while you make the filling. Tip the ricotta into a bowl, then beat in the peanut butter and syrup. Ricotta has a slightly grainy texture so blitz until smooth with a stick blender for a smoother texture if you prefer.
- Take the soaked gelatine from the water and squeeze dry. Put it into a pan with the milk and heat very gently until the gelatine dissolves. Beat into the peanut mixture, then tip onto the biscuit base. Chill until set.
- To freeze, leave in the tin and as soon as it is solid, cover the surface with cling film, then wrap the tin with cling film and foil.
- To defrost, thaw in the fridge overnight.
- To serve, carefully remove from the tin. Whisk the cream with the sugar until it holds its shape, then spread on top of the cheesecake and scatter with the peanut brittle.
