Name: Lasagna Bolognese
Prep time: 15 min
Cook time: 65 min
Total time: 80 min
Yield: 8
Ingredients: 4 tablespoons unsalted butter (2 ounces; 60 g), plus more for greasing baking dish; 4 tablespoons all-purpose flour (1.25 ounces; 35 g); 3 cups (700 ml) whole milk; Kosher salt and freshly ground black pepper; Pinch freshly grated nutmeg; 2 pounds (900 g) fresh homemade plain egg or spinach pasta or store-bought fresh lasagna noodles, or 2 (450 g) boxes dry lasagna noodles (see note); Vegetable oil, for greasing pasta; 1 1/2 quarts (1.5 L) warm ragù bolognese (choose either this classic slow-cooked version, this extra-rich oven-baked version, or this pressure-cooker version); 3 ounces (85 g) Parmigiano-Reggiano cheese