Heat 1 to 2 tablespoons olive oil in a large pot over medium heat
Add 1 pound ground beef or Italian sausage and cook until browned
Add 1 chopped onion and cook until softened
Add 3 to 4 minced garlic cloves and cook for 30 seconds
Stir in 2 tablespoons tomato paste
Add 1 can crushed tomatoes
Add 4 to 6 cups chicken or beef broth
Add 1 to 2 teaspoons Italian seasoning
Add salt and black pepper to taste
Bring to a boil, then reduce to a simmer
Break 8 to 10 lasagna noodles into pieces and add to the pot
Cook until the noodles are tender
Stir in 1 to 2 cups spinach if desired
Mix ricotta cheese with grated Parmesan and a little salt
Ladle the soup into bowls
Top with the ricotta mixture and shredded mozzarella
Garnish with extra Parmesan and basil if desired