In a large stock pot, cook rigatoni according to package instructions.
Meanwhile in a large skillet, sauté onion in olive oil until tender. Add beef, Italian seasoning, ½ tsp of salt and freshly cracked pepper. Brown meat on all sides until cooked through.
Add tomato sauce and diced tomatoes, garlic and 1 tsp salt. Simmer for 30 mins. Add fresh basil.
Drain pasta and toss with sauce. Garnish with freshly grated parmesan cheese and more chopped basil.