1Créé avec l’IA
Preheat your oven to 375°F (190°C).
Prepare the Bolognese sauce: Heat olive oil in a large pan over medium heat. Finely chop the onion, carrots, celery, and garlic and add to the pan. Cook until softened, about 5 minutes.
Increase the heat to medium-high and add the ground beef and pork. Cook until browned, breaking up the meat with a spoon, about 10 minutes. Season with salt and pepper.
Stir in the tomato paste and cook for 2 minutes. Add the canned tomatoes and beef stock. Bring to a simmer, reduce the heat to low, and cook for 45 minutes, stirring occasionally.
In a separate saucepan, melt the butter over medium heat. Stir in the flour and cook for 2 minutes to make a roux. Gradually whisk in the milk until smooth. Add nutmeg and season with salt and pepper. Continue to cook, stirring, until the sauce thickens, about 10 minutes.
Cook the lasagna noodles according to the package instructions until al dente, then drain and set aside.
To assemble the lasagna, spread a thin layer of Bolognese sauce in the bottom of a baking dish. Cover with a layer of noodles. Spread a layer of the white sauce over the noodles, then sprinkle with a layer of Parmesan and mozzarella cheese.
Repeat the layering process until all ingredients are used, finishing with a layer of cheese on top.
Cover the lasagna with foil and bake for 25 minutes. Then remove the foil and bake for an additional 25 minutes, or until the cheese is bubbly and golden brown.
Let the lasagna rest for 10 minutes before slicing and serving.