First prepare our "stuffing." Depending on added to the milk ingredient and the taste of our filling. I used vanilla sugar. Milk with vanilla sugar and sugar (50 grams if you like more sweet, you can take more sugar) bring to boil.. At this stage in the milk, add a little starch. Will milk pudding. Just do not make it very thick. Then certainly the middle will keep the form. Cool. Pour into molds and freeze Instead of vanilla sugar you can use cardamom, cinnamon, star anise. And also, as suggested to me in the comments, you can use pieces of ice cream. Here at beauty. No need to cook and freeze. All so ready.

Well whisk the eggs with the sugar.

Break chocolate and melt with butter in a water bath or in a microwave. Add to the egg mass and knead well.

After add flour, starch and baking powder. All is well beaten.

Fill the mold for cupcake, somewhere halfway over the dough to put a piece of frozen filling. And fill the form with dough almost to the top.

Bake in the oven at a temperature of 180*C for about 20 minutes, not more.

The finished cakes allow to cool.

BON APPETIT!!!