Spread croutons in 13 x ... sausage with the onion and pepper. Drain well. Spread over cheese. Top with mushrooms and grated Mozzarella. Beat eggs ... Serves 6 or more.
In frying pan, melt 3 tablespoon butter. Add mushrooms and cook until limp. Remove ... remaining butter. Add onions and cook until soft. Spread ... until center is firm.