Boil a large pot of salted water, add half the box of pasta + cook 10-12 min or until al dente, then drain + return to pot

Meanwhile, remove sausage from casings + discard casings; heat 1 tsp oil in skillet over high, add sausage to pan, break into large chunks + sear undisturbed 2 min; flip meat over, then break into small pieces; cook 2-3 min until fully cooked + no pinkness remains; add 1 cup sauce + warm 1-2 min

Add sausage + sauce to pasta; toss to combine, divide between plates + sprinkle on 1-2 tsbp cheese to each