Heat olive oil in saute pan, add sausage and cook until brown.
Drain grease (save 1 tbsp).
Add tbsp grease, onions and garlic to large sauce pan or stock pot and cook for 5-8 minutes.
Add chicken broth, tomato paste, salt, pepper, oregano, basil and crushed red pepper.
Bring to a boil.
Return sausage to pot, cover and let simmer for about 10 minutes.
Stir in heavy cream, kale, and tortellini, cover and simmer for another 7-9 minutes.
Serve immediately. (Add parmesan if desired.)