In 30 minutes this all comes together and the parmesan rind – you guys, it makes the whole soup.
Heat olive oil and butter in a pot over medium heat.
Add onion and garlic and cook until softened, about 5 minutes.
Stir in tomato paste, crushed red pepper flakes, oregano, and salt.
Add broth, starting with 4 cups and adding up to 2 more cups depending on desired broth consistency.
Add Parmesan rind and anelli siciliani.
Simmer for 15-20 minutes until pasta is cooked through.
Optionally, finish with a squeeze of lemon.
