Prepare the Tart Base: Preheat oven to 180°C (350°F). Press shortcrust pastry into a tart tin and prick the base with a fork.
Blind Bake: Line with baking paper and baking beans, bake for 12–15 minutes, then remove weights and bake another 5 minutes until lightly golden. Allow to cool.
Make the Filling: Heat heavy cream until warm (not boiling), then pour over chopped white chocolate. Stir until smooth and glossy.
Assemble the Tart: Pour the white chocolate ganache into the cooled tart shell and spread evenly.
Add Raspberries: Arrange fresh raspberries gently on top while the filling is still soft.
Chill: Refrigerate for 2–3 hours until fully set.
Serve: Garnish with extra raspberries or powdered sugar before slicing and serving.