Grease the springform pan (approx. 26 cm Ø). For the sponge mixture mix 100 g butter, 60 g sugar and 1⁄2 TL vanilla flavouring with the whisks of the mixer until creamy. Stir in 1 egg. Mix flour and baking powder and stir in briefly.
Fill the dough into the mould and smooth it down.
Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer). Beat 3 eggs, 125 g sugar and 1 teaspoon vanilla flavouring until very frothy. Then stir in curd cheese and cream cheese. Put cream on the dough in the mould and smooth it down.
Bake in a hot oven on the lowest shelf for about 45 minutes. After approx. 20 and approx. 40 minutes baking time, remove the cake from the edge all around with a knife (so that the surface does not tear open).
Turn off the oven and let the cake cool down with the oven door open.
Drain the cherries in a sieve, collecting the juice. Boil up the juice in the pot. Stir starch and 2 tablespoons of water until smooth. Remove the pot from the heat and stir in the starch. Simmer for about 1 minute while stirring. Stir in cherries, let cool down.
Serve the cheesecake with the cherry sauce.