3 beef fillets cognac sauce Recipes

beef fillets, salt, pepper, canola oil, butter or margarine, yellow onion, sliced and separated into rings, red onion, sliced and separated into rings, green onions, chopped, shallots, chopped, garlic cloves, minced, cognac, beef broth, salt and pepper to taste

filet of beef, salt, fresh ground pepper, unsalted butter, room temperature, unsalted butter, cold, cut into bits, cognac or 3/4 cup brandy