Creating One-Pan Lasagne Soup is straightforward if you follow these easy steps:

1. Heat the Oil: In a large pot, heat the olive oil over medium heat. Add the diced onion and sauté until translucent.
2. Cook the Meat: Add the ground beef or Italian sausage to the pot. Cook until browned and no longer pink, breaking it apart as it cooks.
3. Add Garlic: Stir in the minced garlic and cook for an additional minute until fragrant.
4. Combine Tomatoes: Add the diced tomatoes, tomato sauce, and broth to the pot. Stir to combine.
5. Season the Soup: Mix in the Italian seasoning, salt, and black pepper, allowing the mixture to come to a simmer.
6. Cook the Noodles: Add the broken lasagne noodles to the pot. Stir well and cook for about 10-12 minutes or until the noodles are tender.
7. Incorporate Cheese: Once the noodles are cooked, add ricotta and mozzarella cheeses to the pot, stirring until melted and creamy.
8. Adjust Seasoning: Taste and adjust seasoning if necessary, adding more salt or spices as desired.
9. Serve: Ladle the soup into bowls and top with additional mozzarella cheese and fresh basil or parsley for garnish.

By following these steps, you will have a rich and delightful One-Pan Lasagne Soup ready to indulge your taste buds.