Begin by making the crust. Mix the flour and sugar in a bowl. Cut the softened butter into small pieces, then rub it into the dry ingredients with your fingers until the mix looks like fine crumbs.
Add the egg yolks and knead lightly until the dough just comes together. Don’t knead too much or the pastry may become tough.
Wrap the dough in plastic and chill it in the fridge for at least 30 minutes.
Preheat your oven to 350°F (180°C).
Lightly flour your work surface and roll out the dough to about ⅛ inch thick. Cut circles slightly larger than your tartlet pans.
Press the dough circles gently into the pans, trimming any excess at the edges.
Use a fork to prick the bases a few times to prevent puffing during baking.
Place parchment paper inside each tartlet shell and fill with baking beans or rice to weigh them down. Bake for 15 minutes. Remove the weights and parchment, then bake for another 5 minutes or until the crusts turn golden.
While the crusts cool, whip the heavy cream until soft peaks form.
Spoon or pipe the whipped cream into each tartlet shell evenly.
Arrange fresh raspberries, blueberries, or your favorite fruits on top of the cream.
Warm the red currant jelly gently until it melts, then brush it lightly over the fruit to give a shiny glaze.
Chill the tartlets for a short while if you like them cool, then serve and enjoy these colorful, fruity treats.