How to make
Cut the chicken fillets in half, put them in a plastic bag and tenderize them evenly. Then roll the chicken fillets in the flour, salt and black pepper, mixed together in advance. Heat the olive oil in a large pan on the stove and put the butter in to soften.
Fry the chicken until golden on both sides. Take out the finished ones, put them in a plate and keep them warm. Fry finely chopped onion and shortly after, the garlic in the same butter. Add the wine, wait for it to come to a boil and cook until half of it evaporates. Then add the chopped into cubes tomatoes, or mashed ones from a jar.
Stir well and let it boil for a few minutes, then add the sugar, salt and pepper. Let the sauce to cook for about 25 minutes and stir it occasionally. Sprinkle it with half of the chopped parsley, a bit of grated parmesan and stir it again.
Arrange the fried chicken fillets on top of the sauce. Thoroughly sprinkle each chicken piece with grated parmesan. Put a lid on the pan and saute on the stove until the cheese melts. Finally, sprinkle it with a little more parsley and remove it from the heat.