Yes, Instantbond will bond granite anywhere, no problem. Simply apply the adhesive only to the cracked parts, then align the backsplash to the back of the counter, when you are satisfied with the alignment spray the activator and hold it for at least 20 seconds, which will lock it in place. Use this method because if you apply the adhesive to one side and spray the activator to the other, it will cure too fast for any alignment.