1 lb. medium shells
3 tablespoons unsalted butter, softened
2 1/2 tablespoons all purpose flour
1 cup whole milk
1/2 cup heavy cream
2 1/2 tablespoons Dijon mustard
1 tablespoon minced thyme
1/2 teaspoon ground ginger
President (8 ounce) Brie Round, rind removed
President (5.2 ounce) Manchego, grated and rind removed
1 tablespoons fresh lemon juice
1/2 to 1 cup chicken stock, warmed
3/4 teaspoon salt
1/4 teaspoon cracked black pepper
garnish:
10 buttered crackers, crushed
2 tablespoons unsalted butter, melted and cooled
2 teaspoons minced thyme