1/2 lb. sweet Italian sausage links, removed from casings 1 medium onion, finely chopped 1/2 cup Italian seasoned croutons 1 cup Sargento® Artisan Blends® Shredded Whole Milk Mozzarella Cheese (about 4 oz.) 1 jar Bertolli® Five Cheese with Asiago & Fontina Cheeses Sauce 4 green, red or yellow bell peppers, cored and seeded
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