Traditional bolognese lasagna

The Bolognese lasagna is a classic of Italian cuisine, known for being a tasty and comforting dish.Its combination of meat -rich sauce, pasta layers and creamy Bechamel sauce makes it a favorite on any table.Here is a traditional recipe that will surely impress your guests.

#### Ingredients:
- ** for the bolognese sauce: **
- 500g of ground beef (preferably 70% meat and 30% fat)
- 1 large onion, finely bite
- 2 cloves of garlic, chopped
- 1 medium carrot, grated
- 1 stool of celery, chopped
- 800g of naked tomatoes in can (or passed)
- 3 tablespoons of olive oil
- Salt and pepper to taste
- 1 teaspoon of dry oregano
- 1/4 cup red wine (optional)

- ** For the Bechamel sauce: **
- 100g of butter
- 100g of wheat flour
- 1 liter of milk
- Nutmented to taste
- Salt and pepper to taste

- **Assembly:**
- 250g of lasagna pasta (pre-placed or not requiring prior cooking)
- 300g of grated mozzarella cheese
- 100g of grated Parmesan cheese

#### Preparation Mode:

1. ** Prepare the bolognese sauce: **
- Heat the olive oil in a large pan over medium heat.Add the onion, garlic, carrots and celery, and sauté until soft, about 10 minutes.
- Add ground beef, increase the fire a little and cook until the meat is very golden.
- Add the red wine and let it reduce for a few minutes.
- Add the naked tomatoes, kneading them if they are whole.Season with salt, pepper and oregano.
- Reduce the heat and let the sauce cook slowly for at least 1 hour, stirring occasionally.If necessary, adjust consistency with a little water.

2. ** Prepare Bechamel sauce: **
- In a pan, melt the butter over medium heat.Add the flour and constantly stir for about 2 minutes to form a roux.
- Gradually add the milk, continuing to move to avoid lumps.Cook until the sauce starts to thicken.
- Season with salt, pepper and a pinch of nutmeg.Reserve.

3. ** Mount the lasagna: **
- Preheat the oven at 180 ° C.
- In a large refractory, spread some of the bolognese sauce in the background.
- Cover with a layer of lasagna pasta, followed by more bolognese sauce, a few spoonfuls of bechamel sauce and a layer of mozzarella.
- Repeat the layers until all ingredients are used, ending with a layer of soak and Parmesan cheese on top.
- Cover with aluminum foil and bake for about 40 minutes.Remove the foil and bake for another 10 to 15 minutes until the top is golden and bubbling.

4. ** Serve: **
- Let the lasagna rest for about 10 minutes before cutting and serving.This will help keep the layers firm when cutting.

This bolognese lasagna is a true celebration of