Fresh Pasta Dough and Noodles
Béchamel
- Heat butter in a medium saucepan over medium heat until foaming. Add flour and cook, whisking constantly, 1 minute. Whisk in warm milk, ½-cupful at a time. Bring sauce to a boil, reduce heat, and simmer, whisking often, until the consistency of cream, 8–10 minutes; add nutmeg and season with salt. Remove from heat, transfer to a medium bowl, and press plastic wrap directly onto surface; let cool slightly.
- DO AHEAD: Béchamel can be made 1 day ahead. Keep covered and chill.
Assembly
- Reheat the sauces. Combine Bolognese sauce and remaining 1 cup broth in a large saucepan over medium heat, and heat until sauce is warmed through.
- Meanwhile, if you made the béchamel ahead of time, heat in a medium saucepan over low heat just until warmed through (you don’t want to let it boil).
- Working in batches, cook fresh lasagna noodles in a large pot of boiling salted water until just softened, about 10 seconds. Remove carefully with tongs and transfer to a large bowl of ice water; let cool. Drain noodles and stack on a baking sheet, with paper towels between each layer, making sure noodles don’t touch (they’ll stick together).
- Preheat oven to 350°. Coat a 13×9” baking dish with butter.
- Spread ¼ cup béchamel in the prepared baking dish. Top with a layer of noodles, spread over a scant ¾ cup Bolognese sauce, then ½ cup béchamel, and top with ¼ cup Parmesan. Repeat process 7 more times, starting with noodles and ending with Parmesan, for a total of 8 layers. Place baking dish on a rimmed baking sheet and bake lasagna until bubbling and beginning to brown on top, 50–60 minutes. Let lasagna sit 45 minutes before serving.
- DO AHEAD: Lasagna can be assembled 12 hours ahead. Cover and chill. Let sit at room temperature 2 hours before baking. Cook, covered with foil until the last 20 minutes, then finish cooking uncovered.