Combine chicken, mayonnaise, cream cheese, egg white, onion, mustard ... Spread on four muffin halves. Top with mozzarella and ... cheese instead of mozzarella.
Drain crabmeat and set aside. Beat cream cheese until fluffy; add onions, sour ... crabmeat. Spread on English muffins, top with tomato. Mix ... can be used, diced.)
Combine first four ingredients and place on the six English muffin halves. Place one thin slice ... half. Mix the cheese topping ingredients and place on ... 15 minutes. Serve warm.