Heat butter in a large ... Add the chicken; saute until edges are golden, about 5 minutes. Cut the mushrooms into 1/8 to 1/4 inch ... and grated Parmesan cheese.
Sprinkle chicken with salt and ... a baking dish. Saute onions, in butter remaining in ... 350 degrees. Saute mushrooms with remaining butter. Add to chicken just before serving.
Heat oil and butter in ... subsides, add onions; saute stir occasionally, until soft but ... 3 minutes). Add mushrooms; saute, stirring until mushrooms ... good dish for Company).