Make a batter out of butter, sugar, flour, eggs, baking powder and vanilla sugar.
Cook the pudding powder with the milk and sugar according to the instructions on the packet, then let cool down a little.
Half-fill the muffin cases with the batter and pour about 1 teaspoon of the cooked pudding (use the remaining pudding as dessert) on top. This teaspoon then sinks into the middle of the muffin while baking and makes the filling.
Bake in a preheated oven at 180 ° C for about 15 minutes.
Carefully remove from the molds and let cool down.