1. Preheat the oven to 200°C, gas mark 6.
2. For the pastry, place the flour, icing sugar and butter in a food processor and blitz to resemble fine breadcrumbs, but not so the mixture forms a dough. Pour into a 23cm deep round fluted flan tin and press into the sides and base. Place the tin on a baking tray and bake for 10 minutes.
3. Meanwhile, make the filling in the same food processor. Add the icing sugar, lemon zest and juice, eggs, butter and almonds and blitz until smooth.
4. Scatter the fruit over the pastry base and pour over the filling. Bake for 20 minutes until just golden and set. Allow to cool and set before removing from the tin.