Make the marinara sauce and then re-heat in a large pot, preferably a Dutch oven.

In a large skillet, heat the olive oil over medium-high heat.

When the oil is hot, add the sausages and cook for about 4 minutes, turning occasionally to brown on all sides.

Using tongs, remove the sausages from the pan and set them aside on a platter.

Add the onions and reduce heat to medium, cooking the mixture, stirring occasionally for about 5 minutes, or until the onions have softened.

Add the basil, parsley and garlic to the pan and saute for about 2 minuteS.

Transfer the onion mixture the prepared marinara sauce.

Place the sausages and any accumulated juices in the pot and mix it well.

Simmer, uncovered, for 45 minutes to 1 hour.

Season the sauce with a healthy pinch of salt and pepper and then set aside.

In a large saute pan, heat the olive oil over medium heat.

When the oil is hot, add the garlic and cook it for 1 to 2 minutes, or until starting to brown.

Add the onions and peppers and season with a healthy pinch of salt and pepper.

Saute them, stirring occasionally, for 5 minutes, or until they soften and start to brown.

Add garlic, basil and parsley and cook for 1 to 2 minutes.

Reduce the heat to medium, cover the pan, and cook the mixture, stirring occasionally, for about 15 minutes, until the peppers and onions have softened and starting to caramelize. Set aside.

Turn your broiler onto high.

Open the rolls and place on a baking sheet and add a layer of marinara sauce on the bottom half of each roll. Then place a cooked sausage on the layer of marinara, and then a layer of peppers and onions, and then cover with sliced mozzarella.

Place under the broiler and cook until the cheese has started to melt and the bread is begining to get toasty on the edges. Remove and serve at once with more marina sauce on the side.