In a large soup pot, brown the Italian sausage over medium to medium-high heat. Drain the fat.
2
Add the tomato paste, onions, garlic, and dried oregano. Saute for about 5 minutes.
3
Add the can of Italian tomatoes and chicken broth. Turn the heat to high and bring to a boil. Reduce the heat to a simmer and cook for about 30-45 minutes.
4
Add beans, bring to a boil, then reduce to a simmer. Simmer another 10 minutes-- you can add another cup or two of chicken broth, if you feel like it''s not "soupy" enough.
5
Season with salt and pepper. Garnish each bowl with a teaspoon of pesto and a few grates of Parmesan cheese.