Combine Swiss cheese and cream to make a paste. Spread mixture on each slice of bread.
Place a slice of ham on each slice of bread. Close to form a sandwich.
Beat together eggs, milk and salt in a shallow dish. Dip bread on both sides in egg/milk mixture. Fry on lightly buttered griddle or in skillet until brown on both sides and cheese has melted.
Serve alone or with cheese sauce.
Melt butter in 1 quart saucepan. Blend in flour and mustard. Remove from heat and stir in milk. Heat to a boil stirring constantly. Boil and stir 1 minute. Remove from heat, stir in cheese until melted. Garnish with sliced cherry tomato and green pepper, if desired.