Blueberry bars with a chocolate biscuit base

Makes 12

150g melted unsalted butter,

plus extra butter for greasing

300g chocolate digestive biscuits

200g caster sugar

400g cream cheese

2 eggs

zest and juice of 1 lemon

100g double cream

200g blueberries

20cm square oven tin baking paper

Preheat the oven to 180°C/160°C fan/ gas mark 4 and grease and line the oven tin with baking paper. Place the chocolate digestive biscuits in a food processor and blend until fine crumbs. Mix in the melted butter and 100g of the caster sugar until completely combined. Transfer the mixture to the prepared tin and press into the bottom of the tin with the back of a metal spoon to create a base. Bake for 15 mins until firm, then turn the oven to 170°C/150°C fan/gas mark 3½.

In a large mixing bowl, use an electric whisk to whisk together the cream cheese, the remaining sugar, eggs, lemon zest and juice, and the double cream for 2-3 mins until very thick. Pour into the oven tin and top with the blueberries. Bake for 35-40 mins until the filling is firm, but still wobbles slightly. Allow to cool at room temperature, then leave to chill for 2 hrs. Cut into 12 bars, and serve.