Toast or crackers
Melt butter in a saucepan over moderatelt low heat (about 225 F.); add onion and green pepper and cook till tender; remove from heat. Mix in tomato soup, milk, cheese and Worcestershire sauce. Cook, stirring constantly, till cheese is melted.
Remove from heat. Blend 1/2 cup of cheese sauce into beaten egg in a bowl. Pour egg mixture back into the remainder of the cheese sauce in the saucepan and heat over moderately low heat.
Stir in sherry and spoon over toast or crackers.