for the soup - Heat olive oil in a large pot over medium heat. Add sausage, breaking up into bite sized pieces, and brown for about 5 minutes. Add onions and cook until softened, about 6 minutes. Add garlic, oregano, and red pepper flakes. Cook for 1 minute. Add tomato paste and stir well to incorporate. Cook for 3 to 4 minutes, or until the tomato paste turns a rusty brown color.
Add fire roasted diced tomatoes, bay leaves, and chicken stock. Stir to combine. Bring to a boil and then reduce heat and simmer for 30 minutes. Add uncooked mafalda pasta and cook until al dente. Do not over cook or let soup simmer for a long period of time at this point, as the pasta will get mushy and absorb all the soup broth. You may even want to consider cooking the noodles separately, and then adding some to individual bowls before ladling the soup over them. This would be an especially smart move if you are anticipating any leftovers. Right before serving, stir in the basil and season to taste with salt and freshly ground black pepper.
for the cheesy yum - While the pasta is cooking, prepare the cheesy yum. In a small bowl, combine the ricotta, Parmesan, salt, and pepper.
to serve - Ladle soup into bowls and top each bowl with a bit of shredded mozzarella and a good dollop of the cheesy yum. Finish with some freshly ground black pepper over the top and a small scattering of fresh basil.