Season the both sides of each steak liberally with kosher salt, black pepper, and the McCormick Montreal Steak Seasoning.
Place the steaks in a sealable food storage bag or in a covered container of your choice. If using storage bag ensure it's placed in a plate or bowl to prevent liquids leaking in the fridge.
Place whole garlic cloves, rosemary leaves, and wine into a blender.
Blend the wine, garlic, and rosemary in the blender until garlic and rosemary are finely minced. Pour wine mixture over steaks. Refrigerate and marinate steaks for four hours or overnight (preferably overnight).
When ready to cook the steaks, start grill (use of charcoal grill is preferred).
Remove steaks from refrigerator 15 minutes before cooking the steaks.
Once charcoals are gray, oil the grill plates.
Put the steaks on the oiled grill.
Grill steaks until desired doneness is achieved.
Let steaks rests before slicing the steaks, and serving.