In a sauce pan on medium high heat add Oil, allow to get hot. Add Sausage, sauté for 10 minutes. Remove Sausage leaving Oil, add Onions, Fennel, and Chili Peppers. Lightly season with Salt, Pepper, and Garlic Plus, sauté for 10 minutes. Add Carrot, and Celery, lightly season with Salt, Pepper, and Garlic Plus, sauté for 6 minutes.
Reduce heat to medium, add Garlic and sauté for 30 seconds, (until garlic is aromatic). Deglaze pan with Wine, allow Wine to mostly reduce. Add Sausage back in, mix well.
Add in Tomatoes, Chicken Stock, Salt, Pepper, Oregano, and Fennel Seed.
Bring to a boil, reduce heat, cover, simmer for 2 hours. Add Stock if too dry.
Add in Cheese, mix well. Add in Cornstarch, until desired thickness.