Prepare vinaigrette: In a small bowl, combine first 4 ingredients (garlic through salt and pepper); set aside.
Prepare relish: Preheat outdoor grill or grill pan to MEDIUM. Grill tomato halves 8 to 10 minutes or until charred. Cut grilled tomato halves into bite-sized pieces and place in a medium bowl; along with chopped basil. Pour vinaigrette over the vegetables.
Coat the grill grate with 2 tablespoons of ghee. Grill steaks, salt and pepper thru garlic powder over medium heat for 5 minutes per side or until fork-tender. Serve with relish.