• Preheat the broiler on "high". Line a baking sheet with parchment paper, or aluminum foil lightly coated with nonstick spray.
• Cut open four rolls and arrange the rolls on the prepared baking sheet.
• In a large skillet, heat the oil over medium heat.
• Add the onions and peppers to the skillet and cook for 5 to 7 minutes, stirring occasionally, until the vegetables are soft. (Putting to lid on the skillet will soften the vegetables a bit quicker.)
• Transfer the cooked vegetables to a plate.
• Spritz the same skillet lightly with nonstick spray, and cook the sausage until browned.
• Put one of the cooked sausages on top of each roll. Top with the onion/pepper mixture, and sprinkle shredded cheese on top of the veggies.
• Broil the sandwiches on "high" for about 2 to 3 minutes, until the cheese bubbles.

Optional Homemade Sandwich Rolls

• In a large bowl, whisk together the flour, salt and sugar.
• In a small bowl, combine the yeast with ¼ cup lukewarm water. The water should feel neither hot nor cold to the touch. Let the yeast sit about 5 minutes, until dissolved.
• Microwave ½ cup of skim milk for about 10 seconds, until lukewarm. The milk should feel neither hot nor cold to the touch.
• Combine the milk, the water/yeast mixture and 1 tablespoon of oil with a whisk.
• Pour the water/milk/oil mixture into the bowl with the flour/salt/sugar mixture.
• Stir together until a dough forms. You may need to add more water, 1 tablespoon at a time until the dough reaches the consistency of play dough.
• Lightly spray a clean work surface with nonstick spray and knead the dough for about 7 minutes. You will feel the dough become stretchy and pliable as you work.
• Put the dough in a bowl and cover with plastic wrap. Put the bowl in a warm spot (I like to stash it in a turned-off oven) for an hour or so.
• Let the dough sit until it doubles in size (this takes about 1 hour)
• Preheat the oven to 400 °F (if you let the dough rise in the oven, TAKE THE DOUGH OUT OF THE OVEN BEFORE TURNING IT ON!)
• Line a baking sheet with parchment paper, or aluminum foil (be sure to spray the aluminum foil with nonstick spray; bread will stick to the foil otherwise.)
• Lightly dust a clean work surface with flour or nonstick spray to prevent sticking.
• Divide the dough into four equal parts. Roll each dough portion into a ball. Use the prepared work surface to roll the dough ball into a cylindrical shape.
• Place each cylinder-shaped piece of dough on the prepared baking sheet, and brush lightly with skim milk.
• Bake the rolls at 400 °F for about 15 minutes.