italian sausage recipe

**Ingredients**: - 1 pound Italian sausage links (mild or hot) - 2 tablespoons olive oil - 1 large onion, sliced - 2 bell peppers (any color), sliced - 3 garlic cloves, minced - 1 can diced tomatoes (14.5 oz) - 1 teaspoon dried oregano - 1 teaspoon dried basil - Salt and pepper to taste - 1/4 cup fresh parsley, chopped (optional, for garnish) - Hoagie rolls (optional, for serving)