01 -
Heat a large Dutch oven over medium heat. Add Italian sausage, breaking it up with a spoon, and cook until no longer pink, about 5 minutes. Drain excess fat if necessary.
02 -
Add diced onion, minced garlic, red bell pepper, and zucchini to the pot. Cook, stirring occasionally, until vegetables soften, about 5 to 7 minutes.
03 -
Stir in tomato paste and cook for 1 minute to deepen the flavor.
04 -
Pour in chicken broth, crushed tomatoes, diced tomatoes, dried basil, dried oregano, dried thyme, and optional red pepper flakes. Stir to combine and bring the mixture to a gentle boil.
05 -
Add broken lasagna noodles, reduce heat to a simmer, and cook uncovered for 12 to 15 minutes, stirring occasionally, until the pasta reaches an al dente texture.
06 -
Adjust seasoning with salt and black pepper as desired.
07 -
Stir in half of the shredded mozzarella and Parmesan cheeses just before serving to enrich the broth.
08 -
Ladle the soup into bowls and top each serving with a dollop of ricotta, a sprinkle of remaining mozzarella and Parmesan, and chopped fresh parsley.