For the lasagna soup:
In a large pot or Dutch oven over medium-high heat, cook the ground beef and sausage until browned, 6-7 minutes. Add the onion and garlic and cook until the onion softens, about 4-5 minutes.
Add the crushed tomatoes, tomato sauce, chicken broth, bay leaves, basil, oregano, red pepper flakes, kosher salt, and black pepper. Bring to a boil and cook for 10 minutes, then add the lasagna noodles. Reduce to medium-low and cook for 10 minutes more, or until the noodles are tender. Add more chicken broth or water if needed. Discard the bay leaf, add the spinach, and cook until wilted.
While the soup is cooking, in a medium bowl mix the ricotta cheese, mozzarella, parsley, basil, and kosher salt. Set aside or refrigerate until ready to serve.
To serve, ladle the soup into bowls, top with a dollop or two of the ricotta cheese topping, and sprinkle with more parsley and basil.