Preheat oven to 350 F. In a medium bowl, whisk to combine the flour, powdered sugar, salt and cardamom (if using). Stir the melted butter into the dry ingredients with a spatula until combined.
Use your hands or the bottom of a measuring cup to press the mixture into the bottom and sides of a 9 inch round tart pan with a removable bottom. Bake 15 minutes. Set pan on a wire rack. Cool completely before filling.
Mascarpone Filling
In a large bowl, mix the mascarpone, powdered sugar, lemon zest and vanilla extract until well combined.
Once tart crust has cooled completely, spread the mascarpone evenly using an offset spatula and top with fresh blueberries or the berry of your choice. Serve with a dusting of powdered sugar on top!
Notes
Recipe Update: This recipe was updated in April 2025. The filling is the same, but the crust is different. The original crust recipe is the same as the one used in this lemon olive oil tart recipe.Sweetness level: Feel free to start with 1/2 cup powdered sugar for the filling. Taste it and add more powdered sugar if you like. Fruit: Use fresh fruit. Do not use frozen fruit. Feel free to swap in other berries such as strawberries, blackberries, raspberries or a combination of berries. Serving: For best results, top with fruit and powdered sugar just before serving.Storage: Store leftovers in an airtight container in the fridge for up to 3 days.