Key lime pie

Ingredients

. 375g/12oz plain or sweetmeal digestive biscuits, crushed
. 150g/5oz unsalted butter
. grated zest and juice of 8 large limes
. 570ml/1 pint double cream
. 1 x 397g/14oz can sweetened condensed milk
. lime zest, to decorate

Preparation method

Prep: 1-2 hours. Cook: Less than 10 mins
1. Melt the butter in a small pan and stir in the crushed biscuits.
2. Lightly press into the base of a 23cm/9in deep loosed-bottomed fluted flan tin. Chill whilst preparing the filling.
3. To prepare the filling: place the lime juice into a large bowl, add the cream and condensed milk. Whisk for 1-2 minutes. Add the lime zest and lightly stir.
4. Pour onto the prepared biscuit base. Place onto a tray and chill in the fridge for 1-2 hours.
5. Decorate with crystalized lime zest and serve.