In a food processor with a steel blade, add the flour, butter, powdered sugar, vanilla, and salt, then process until a crumbly mixture is obtained.
Add the egg and continue to process until the dough lumps are formed.
Transfer the dough to a lightly floured work surface and form a disc shape.
Wrap in plastic wrap and cool in the refrigerator for an hour.
On a floured surface, roll out the dough to a 3-4 mm thick sheet and set aside the baking pan, making sure to create a right angle between the side and the base, ensuring that the edges remain high.
Stab the dough, evenly, with a fork.
Freeze the dough inside the pan for an hour.
Set the oven to 170°C / 350°F fan.
Place a sheet of heat resistant nylon or crumpled baking paper on the dough and fill with dry beans/chickpeas or special weights for baking. (This is known as “Baking blind" and is the process of baking a piecrust or other pastry without the filling.)
Bake blind for 13 minutes.
Remove the weights from the dough and continue baking for 5 more minutes.
Mix all of the filling ingredients in a bowl.
When the 5 minutes are over, pour the filling into the dough and bake for 30 minutes.
Cool the tart at room temperature.
Decorate with whipped cream and fruits.