My friend from Spain showed me this recipe. Best dinner I've ever eaten!

✅Ingredients:
1 large onion.
Vegetable oil.
A couple cloves of garlic.
Ground beef 500 grams.
100 milliliters of red wine.
Salt and ground pepper.
200 grams of tomato puree.
Sugar 1 teaspoon.
Leeks 1 piece.
Butter 20 grams.
Flour 3 tablespoons.
Milk 500 milliliters.
A pinch of nutmeg.
100 grams of parmesan.
200 grams of pasta.
100 grams of cheese.

Bake for 20 minutes at 200C (400ºF).