Recipe Note
Butter: Ensure your butter is softened but not melted, as it will mix better with the icing sugar and create a light, tender dough.
Flour: For best results, use all-purpose flour. Sifting the flour helps avoid lumps in the dough.
Dough Handling: When mixing the dough, be careful not to overwork it. Once the dough starts to come together, stop mixing. Overworking the dough can result in tough tart shells.
Chilling the Dough: After forming the dough into a disc, make sure to chill it for at least an hour. This step helps to firm up the dough, making it easier to roll out and less likely to shrink during baking.
Freezing the Tart Shells: Freezing the tart shells for 15 minutes before baking helps maintain their shape during blind baking. This prevents the dough from puffing up too much or shrinking.
Baking Beans or Rice: Use uncooked rice or baking beans to weigh down the tart shells while blind baking. This ensures the bases don’t rise and remain crisp. Don’t forget to line the shells with baking paper to prevent direct contact between the beans and the dough.
Egg Wash: After the initial baking, the egg wash will help create a shiny, golden finish on the tart bases and seal them, preventing the custard from soaking into the pastry.
Mixing the Custard: When making the custard, make sure to whisk the egg yolks, sugar, cornstarch, and vanilla until fully smooth before adding the milk. Gradually adding the milk helps prevent lumps.
Cooking the Custard: Be sure to whisk constantly while heating the mixture to avoid curdling. The custard should thicken gradually over medium-low heat. If it starts to form lumps, remove from heat immediately and whisk vigorously.
Butter in Custard: Adding butter at the end will give the custard a smooth, velvety finish.
Layering: For the best visual effect and taste, pipe in the custard first, followed by the passion fruit curd. The curd’s tanginess adds a burst of tropical flavour that complements the custard beautifully.
Raspberries: Arrange the raspberries upside-down on top to ensure they stay securely in place. You can also tear some raspberries and arrange them to fill any gaps.
Extra Curd: Use a small spoon or piping bag to place a bit of extra passion fruit curd in the centre of each raspberry for an extra pop of flavour and colour.
Chilling: After assembling, chill the tarts for 2–4 hours to allow the filling to set properly. This also helps to marry the flavours together, making the tarts even more delicious.
Optional Icing Sugar: Dusting the tarts with icing sugar just before serving is optional but adds a lovely touch of elegance. Be sure to do this just before serving to prevent the sugar from dissolving.
Storage: These tarts are best enjoyed within 2-3 days. Keep them in an airtight container in the fridge. You can also prepare the tart shells and custard in advance, then assemble the tarts closer to serving.
If you don’t have a piping bag, you can always spoon the custard and passion fruit curd into the tart shells. It may take a bit longer to get the neat layers, but the taste will be just as amazing.
The custard can be made a day ahead and stored in the fridge, covered with cling film directly on the surface to prevent skin formation. This will save you time on the day of assembly.