The best Italian lasagna

Ingredients

• 2 heads onions
• 2 cloves garlic
• 100 g carrots
• 200 g cherry tomatoes
• 200 g bacon
• 500 g ground beef
• 800 g tomato sauce
• 3 tbsp tomato paste
• 150 ml heavy cream
• 2 tsp rosemary
• 3 tsp thyme
• 1 tsp garlic powder
• 1 1/2 tsp onion powder
• 4 tsp basil
• 1 pinch salt
• 1 pinch Peber
• 500 ml heavy cream
• 150 g ricotta cheese
• 3 tsp nutmeg
• 45 g butter
• 2 bags lasagna noodles
• 3 bags mozzarella cheese