1. Chop onion into small cubes and fry in vegetable oil until golden brown. While fried onions, you can boil a little chicken that is cooked quickly. Then we cut it in small pieces, put in a bowl and add to it sour cream, mustard, salt, pepper and seasoning for chicken.
2. All the mix and give stand 10 minutes Now prepare the dough. Butter at room temperature, mix with salt and baking powder, stir with a mixer. Add the flour, beat again. This can be done with a blender or manually. You should have small crumbs. The split mold put a circle of baking paper and spread the dough 0. 5.
3. screed, but do not crush and small ledges. In a separate bowl, beat 3 eggs a whisk and add to chicken fillet with onion. All mix and spread on the dough. Top pour the remaining batter and send the form in a preheated 200 degree oven for 40 -50 minutes before browning.