Serves 4

8 slices white bread, trimmed of crust
8 slices Swiss cheese
1/2 pound sliced cooked chicken
4 tablespoons butter
1 cup Mornay sauce

Top each bread slice with a slice of cheese. Cover cheese with an equal portion of chicken.
Top with a second slice of cheese and bread. Brush the top and bottom of bread with 3 tablespoons of butter.
Heat remaining butter in a large skillet. Add sandwiches to skillet. Brown sandwiches on both sides.
Transfer to individual warmed plates. Serve with sauce on side if desired.