Begin by rinsing and seeding the peppers,slicing them and the onions. Saute the onions and garlic on high with two tablespoons of olive oil until just beginning to brown,add the bell peppers and saute for two or three minutes more,remove to a mixing bowl using a slotted spoon.
Add the other two tablespoons of oil to the pan and brown the sausages evenly on both sides for 8-10 minutes or until done. remove to the mixing bowl with the pepper mixture and toss to coat.
Deglaze the pan with the chopped plum tomatoes,add the fresh chopped basil and toss with the sausage and peppers. Serve on toasted Italian rolls or heroes,hoagies,wedge bread etc. Enjoy!! Bon Appetite!