<s>[INST] Tell me how to cook a lasagne that'll impress my Italian in-laws. [/INST] Preheat the oven to gas 6, 200°C, fan 180°C. Layer up the lasagne in a baking dish, starting with a third each of the ragu, then the pasta, then the white sauce. Repeat twice. Top with the Parmesan and mozzarella then bake in the oven for 40-45 mins, until piping hot and crisp and bubbling on top.</s>\ <s>[INST] Could you provide me with a proper cooking recipe? I think I'm missing some key ingredients and tips on how I can make this better and what are my options here? [/INST] Certainly, here's a full recipe to make a classic lasagne that will impress your in-laws:

Ingredients:

- 12 lasagne sheets
- 500g beef mince
- 1 onion, diced
- 2 cloves of garlic, minced
- 400g can of chopped tomatoes
- 2 tablespoons tomato paste
- 2 teaspoons dried basil
- Salt and pepper, to taste
- 1 1/2 cups (375ml) beef stock
- 1/4 cup (60ml) red wine (optional)
- 1 tablespoon olive oil
- For the white sauce:
- 50g butter
- 4 tablespoons all-purpose flour
- 3 cups (750ml) whole milk
- Salt and pepper, to taste
- 1/2 teaspoon nutmeg
- 1 cup (100g) grated Parmesan cheese
- 1 cup (100g) grated mozzarella cheese

Instructions:

1. Preheat oven to 375°F (190°C).
2. In a large pan, heat the olive oil over medium heat. Add the onion and garlic and cook until softened, about 5 minutes.
3. Add the beef mince and cook until browned, breaking up any lumps with a wooden spoon.
4. Stir in the chopped tomatoes, tomato paste, basil, salt, pepper, beef stock, and red wine (if using).
5. Reduce heat to low and let simmer for 30 minutes.
6. While the mince is cooking, make the white sauce. In a medium saucepan, melt the butter over medium heat.
7. Stir in the flour and cook for 2 minutes, stirring constantly.
8. Gradually pour in the milk, whisking continuously until the mixture is smooth.
9. Bring to a simmer and cook for 5 minutes, or until the sauce has thickened.
10. Season with salt, pepper, and nutmeg.
11. To assemble the lasagne, spread a thin layer of the mince mixture in the bottom of a 9x13 inch (23x33cm) baking dish.
12. Top with 3 lasagne sheets, breaking them to fit if necessary.
13. Spread a third of the white sauce over the pasta, then sprinkle with a third of the Parmesan and mozzarella cheese.
14. Repeat the layers two more times, ending with a layer of cheese on top.
15. Cover with foil and bake for 25 minutes.
16. Remove foil and bake for an additional 25 minutes, or until the cheese is melted and golden brown.
17. Let cool for 10 minutes before serving.

Enjoy!</s>