Cook pasta according to package instructions. Reserve 1/2 cup of pasta water before draining.
While pasta is cooking, in a large skillet that will fit the pasta, brown Italian sausage. Drain the grease and set sausage aside.
In the same skillet that you cooked the sausage in, heat olive oil over medium heat. Add shallots and cook just until they start to wilt. Add in the tomatoes and cook until they start to release their juices, about 10 minutes. Add garlic and calabrian chilies and cook just until garlic is fragrant.
Stir in 1/4 cup reserved pasta water to deglaze the pan. Be sure to scrape any brown bits that have stuck to the bottom, there is good flavor there!
Add the cooked pasta and return the sausage to the pan. Toss to coat. If pasta seems dry add some more pasta water. Stir to coat. Season with salt and stir in fresh chopped basil. Serve hot.
Notes
Nutrition information for estimation purposes only.