For the cream, warm up cream, coffee powder and sugar in a small pot at low heat. Add coffee liqueur and stir in. Pour into a mixing bowl, cover and chill for about 3 hours.
In the meantime roll out the dough and cut out 6 circles (each approx. 12 cm Ø) with a round cookie cutter. Grease 6 tartlet cups (10 cm Ø) with smooth rim and dust with flour. Place a circle of dough in each mould, press the edges together.
Prick the bottom of the dough several times with a fork. Line the tins with baking paper and weigh down with dried peas. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for approx. 10 minutes.
Remove paper and dried peas. Bake for another 5 minutes until golden brown. Let cool on a cake rack. Remove the tartlets from the ramekins.
Whip the coffee cream until stiff with the whisks of the hand mixer and fill into a piping bag with star-shaped spout. Pour cream into the cooled short pastry bowls. Decorate with cocoa and chocolate pearls.