01 -
Bring a large pot of salted water to a boil. Cook the lasagna noodles according to the package directions. Drain, rinse the noodles with cold water to stop the cooking process, and set aside.
02 -
If serving the soup immediately, cook the noodles directly in the soup. Avoid simmering for longer than 10 minutes to prevent overcooking.
03 -
While the pasta cooks, heat olive oil in a large Dutch oven or heavy pot over medium-high heat. Add the sausage, breaking it up with a spoon. Cook until mostly browned, 5 to 7 minutes.
04 -
Add the onion and garlic to the sausage. Cook, stirring occasionally, until softened, 5 to 7 minutes. Stir in the tomato paste, dried basil, dried oregano, and crushed red pepper. Cook until the tomato paste darkens, about 2 minutes.
05 -
Add the chicken broth, crushed tomatoes, and 1 cup of water. Bring to a boil uncovered, then reduce heat and simmer uncovered for 15 minutes. Skim any film that rises to the surface.
06 -
In a medium bowl, combine the ricotta and Parmesan cheeses. Season with 1/8 teaspoon kosher salt and a dash of black pepper.
07 -
Add 1 cup of cooked pasta to each serving bowl. Taste the soup and adjust seasoning with salt or pepper. Ladle soup into bowls over the pasta. Top with mozzarella cheese, ricotta mixture, and torn basil leaves.
08 -
Store cooked noodles and soup in separate airtight containers in the refrigerator for 3 to 5 days.