INGREDIENTS
8 oz
Virginia ham, baked
1
Dijon mustard
3 tbsp
All-purpose flour
1/2 tsp
Black pepper, freshly ground
1 tsp
Kosher salt
1 pinch
Nutmeg
16
slices White sandwich bread
2 tbsp
Butter, unsalted
12 oz
Gruyere, grated
2 cups
Milk, hot
1/2 cup
Parmesan