About this recipe:I used to buy key lime pies but then I started making them and playing with the recipe until I got the flavour completely right. I think this is an extraordinarily good key lime pie! I hope you enjoy it.
70g flaked almonds, toasted
225g digestive biscuits, crushed
50g caster sugar
1 pinch salt
55g butter, melted
4 egg yolks
1 (400ml) tin sweetened condensed milk
120ml lime juice
180ml cold double cream
1/2 teaspoon grated lime zest
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Pulse the almonds in a food processor until finely ground. Combine the ground almonds with the biscuit crumbs, sugar and salt. Pour in the melted butter and mix until evenly moistened. Press into a 23cm pie dish.
Bake the base in the preheated oven until golden brown, 10 to 13 minutes.
While the base is baking, beat the egg yolks in a bowl with the condensed milk, cream and lime zest. Whisk in the lime juice a little at a time to thicken the filling; pour on top of the biscuit base and return to the oven.
Bake in the oven for 15 minutes or until the filling is set. Cool to room temperature on a wire rack before covering loosely with cling film and refrigerating overnight.