Salt and pepper the chicken breast and fry all over in butter. Remove and keep warm in aluminum foil.
Quarter the red onions lengthways and sauté in butter. Deglaze with the red wine, balsamic vinegar and chicken stock and stir in the honey. Bring to the boil and reduce by half. Stir in the sour cream and season with salt and pepper if necessary.
There is also gnocchi tossed in butter and a lamb`s lettuce.