Toggle bolts are great but if the butterfly is bigger then the width of stud, it can't completely open, if studs have ends on them. I predrilled thru the wall and stud with a smaller drill bit then the screw itself. Then I used cabinet screws, 3" long, and screwed into stud, and it had plenty of grip plus hold. You can also hang plywood, (3to4inches smaller then width and heighth of cabinet, and then screw cabinet into plywood. Whatever you do, don't buy PRESSED board cabinets. definetly not worth it for strength. I had pressed board with bottles of boos and viniger etc, and it pulled off wall from weight, even though the attached back part stayed in place. I learned my lesson.
