Italian Sausage and Peppers Mostaccioli is a flavorful and hearty pasta dish that combines Italian sausage, bell peppers, and mostaccioli pasta. The sausage is cooked until browned and then combined with sautéed peppers and onions, creating a deliciously savory and slightly spicy sauce. The mostaccioli pasta is cooked until al dente and then tossed with the sausage and pepper mixture. This dish is perfect for a weeknight dinner or a gathering with friends and family.