Heat grill to medium-high heat.
Rub 2 Tbsp. dry rub evenly onto both sides of steak. Grill 6 to 8 min. on each side or until medium-rare (145ºF), or desired doneness. Remove steak from grill; cover. Set aside.
Bring remaining dry rub, beef broth and brandy to boil in skillet. Whisk cornstarch and cream until blended. Add to broth mixture; cook and stir 2 to 3 min. or until thickened.
Slice steak. Serve topped with sauce.