Mix the flour with the baking powder and sieve. Add the remaining dough ingredients (except breadcrumbs) and knead to form a smooth dough. Roll out 2/3 of the dough and place in a greased springform pan. Form a 2-3 cm high border with the rest. Prick the dough base several times with a fork and sprinkle with the breadcrumbs.
Spread the apricots on top. Mix the egg yolk, sugar, vanilla sugar, cream and starch and fold in the flaked almonds. Spread on the apricots.