In a mixing bowl, combine ground coffee, brown sugar, paprika, garlic powder, onion powder, salt, and black pepper. Mix well.

Pat the strip steaks dry with paper towels. Use a meat mallet to gently pound the steaks to an even thickness.

Rub the coffee mixture generously over both sides of the steaks. Let them sit at room temperature for 15 minutes.

Preheat the grill to high heat. Place the steaks on the grill and cook for about 4-5 minutes on each side for medium-rare, or until desired doneness.

Use a meat thermometer to check for an internal temperature of 130°F (54°C) for medium-rare.

Remove the steaks from the grill and let them rest for 5 minutes before slicing. Serve with your favorite sides.