SERVES 6 TO 10
1 package (15 sheets) flat no-boil lasagna noodles
2 tablespoons unsalted butter
2 tablespoons all-purpose flour
2 medium cloves garlic, finely minced or grated on a
Microplane (about 2 teaspoons)
2 cups whole milk
8 ounces whole-milk mozzarella cheese, grated
¼ teaspoon freshly grated nutmeg
Kosher salt and freshly ground black pepper
1 recipe The Ultimate Bolognese Sauce (here), warm
4 ounces Parmigiano-Reggiano, grated (about 2 cups)