Meat Lasagna - San Remo - US

Ingredients

• 8.8oz curly lasagna
• 2 tbsp oil
• 1 onion, finely chopped
• 1 carrot, finely chopped
• 1 clove of garlic, crushed
• 18 oz ground beef
• 5 tbsp tomato paste
• 28 oz canned tomatoes
• 2 cups chicken stock
• Salt and pepper to taste
• Pinch of nutmeg
• 2 tbsp butter
• 2 tbsp all-purpose flour
• 2 cups milk
• 4 ½ oz mozzarella or cheddar cheese
• ¼ cup grated parmesan cheese