Taken from Napoleon’s Everyday Gourmet Grilling.
Gently fold the green onions and gorseradish into the whipped cream. Season to taste with salt and pepper, cover, and refrigerate until needed.
Pat steaks dry with paper towels and rub with the olive oil. Rub the Steak Spice into the steaks all over, massaging and pressing to adhere. Set aside at room temperature for 20 to 30 minutes.
Preheat the grill to medium-high (450˚F/230˚C).
Grill the steaks for 7 to 9 minutes a side for medium rare. Remove from the grill and let rest for 5 minutes.
Serve with the horseradish cream on the side.