In a large saucepan add the olive oil and onion. Saute over medium-high heat for 2-3 minutes. Next add in the garlic and saute for another 1-2 minutes.
Add in the crushed tomatos to saucepan and lower heat to a simmer.
In a large pan cook the sausage over medium heat for 3-5 minutes or until no longer pink. Drain the fat and set the sausage aside.
Meanwhile, cook the pasta in a large pot of boiling salted water, stirring constantly until al dente.
Add the hot diced banana peppers and sausage to the sauce. Cook until peppers are tender or around 15 minutes.
Add pasta to the sauce and top with parmigiana reggiano and fresh oregano.