Sieve the flour into a bowl and combine with icing sugar. Add cold, diced butter and mix with your fingers to crumble. Next, add the yolk and cream and knead together. Put the dough in a plastic bag and refrigerate for at least an hour. Roll the chilled dough into a rectangle and divide with a knife into 6x6 cm squares. Place a teaspoon of Lauretta apricot filling onto each square, join the opposite sides of the square and place the cookie on a baking tray. Bake at 180 °C for 25 minutes. Dust the cooled-down cookies with icing sugar.