Place a large skillet over medium/high heat and cook the ground beef until cooked through and no longer pink. Add the diced onion and garlic and cook an additional 5 minutes, or until onions are to your desired tenderness.
In a bowl, combine the worcestershire sauce, mustard, brown sugar, salt, pepper, basil, and tomato sauce.
Add the sauce into the pan and bring to a simmer for about 10 minutes, or until desired thickness. Enjoy!