INGREDIENTS
3/4 lb
Ham
3 tbsp
Thyme, fresh leaves
3 tbsp
Dijon mustard
3 tbsp
All-purpose flour
1
Salt and freshly ground pepper, Coarse
1
Long loaf rustic bread
2 tbsp
Butter, unsalted
4 cups
Gruyere cheese, grated
1 cup
Parmesan cheese
1 1/4 cups
Whole milk