Easy and delicious homemade lasagna with minced meat

1 1/2 cups mashed potatoes
1 package heavy cream (200 g)
Salt, pepper and grated nutmeg to taste
1 package pre-cooked lasagna noodles (500 g)
1 cup shredded mozzarella cheese
4 tablespoons grated Parmesan cheese
Dip:
3 tablespoons oil or olive oil
500 g ground meat
1 onion, diced
2 cloves garlic, minced
1/2 cup tomato extract
4 ripe tomatoes, peeled and seeded, diced
1 1/2 cups water
Salt and black pepper to taste
1 bay leaf,
chopped Fresh basil to taste

Method of preparation: