Over medium heat add oil to frying pan. Add green pepper and onion, saute till almost tender. Add garlic and continue to saute for about a minute. Remove to a paper towel or paper bag to drain.
Brown sausage in same pan. Drain oil from pan when sausage is done. Add green peppers, onions & garlic back to pan to heat through.
Spoon some of this mixture into Bread rolls or tortillas or pita bread whatever you have on hand. If you are using marinara sauce add a couple of spoonfuls to the top of the meat mixture. Now top with cheese.