[I ate] Italian sausage sandwich at Sausage King, Fenway Park

Fenway Style Sausage, Peppers & Onions

makes 5 hoagies

5 italian sausages (hot italian is traditional, but you can use sweet for the little ones)
2 onions, peeled and sliced
2 green bell peppers, sliced
2 tablespoons olive oil
salt and pepper to taste
New England style hot dog buns
mustard, yellow or spicy to your taste

Preheat your oven to 375°F. Toss your peppers and onions in a 13 x 9 baking dish with the olive oil. Season with salt and pepper to taste. Top the peppers and onions with the sausages. Poke the sausages a few times with a knife. Bake for about an hour, turning sausages a few times so that they can evenly brown on all sides. Let them sit for ten minutes, then place sausage in bun, top with peppers and onions, and garnish with mustard.