Preheat your oven to 375°F (190°C).
Roll out the pastry on a lightly floured surface to fit a 9-inch tart tin.
Prick the base with a fork and chill in the fridge for 30 minutes.
Line the pastry with parchment paper, then fill with baking beans or pie weights.
Bake for 15 minutes, then remove the weights and paper, and bake for another 5 minutes until golden.
Spread the raspberry jam evenly over the base of the tart.
Mix ground almonds, icing sugar, lemon zest, eggs, heavy cream, and almond extract to form the filling.
Pour the almond filling over the jam layer in the tart shell.
Bake for 25-30 minutes or until the filling is set and lightly browned on top.
Let the tart cool before removing it from the tin.