Ingredients 3 tablespoons salted butter 1 1/2 tablespoons all-purpose flour 1 cup whole milk 2 to 3 sprigs fresh thyme 2 tablespoons Dijon mustard 1/4 teaspoon kosher salt 1/8 teaspoon ground nutmeg 8 thick slices white bread 8 tablespoons (1 stick) salted butter, softened 12 slices deli ham 2 cups grated cheese 2 tablespoons extra-virgin […]