In a bowl, add the chicken egg (2 PCs.), add sugar (100 gr.). Beat the egg-sugar mixture until white.
Then add sour cream (100 gr.)
Then add the baking powder. Beat the mixture.
Next, add the Chocolate flavor (3 drops) and melted butter (120 gr.)Beat the mixture well again.
Gradually, in portions, enter the total amount of flour (200 gr.). mix the Mixture.
Then add the chocolate drops to the batter. Stir the mixture.
Put the prepared dough in capsules and send the form to the oven preheated to t180-190C for baking. Total number of cupcakes (9 PCs.)
Bake cupcakes until Golden and ready, check readiness with a wooden splinter.
For the cream:180g. softened butter at room temperature mixed with 1/2 ban. condensed milk. Beat the mixture with a mixer until evenly smooth, then add 1 teaspoon of cocoa powder, if desired, you can add more cocoa powder. Beat the cream well again.Using a pastry bag with a nozzle, release the cream on the finished cooled cupcakes. Sprinkle the cupcakes with chocolate chips.