Slice up onion and pepper.

In large skillet.. cook sausages slowly on low-med heat for about 15minutes.. turning after 10min.

Increase heat to med-high heat and cook for an additional 10-15 min. stir peppers and onions.. turn sausages occasionally.

Once completely cooked.. reduce heat to low and place 1 slice of provolone on each sausage. allow cheese to melt.

place sausages in buns and top with onions and peppers. Drizzle on desired tomato sauce. Enjoy!! :)