Italian Rigatoni

1 (12 ounces) Package Rigatoni
1 1/2 pounds Italian Sausage, Cut into 1-inch Pieces
1 Large Onion, Chopped
3 Garlic Cloves, Minced
2 Cans (14.5 ounces) Italian Diced Tomatoes, Undrained
1/4 Cup Cilatro, Chopped
1 Teaspoon Basil Leaves
1 Teaspoon Thyme leaves
Salt and Pepper, To Taste
3 Tablespoons Butter

In a large skillet, cook sausage until brown. Add onion and garlic and sauté with sausage. Add tomatoes, cilantro, basil, thyme, salt, pepper and butter. Cover and let simmer for 20 minutes. Serve over rigatoni pasta. Garnish with cheese of choice-Mozzarella and/or Parmesan.