Typically, two hush puppies per person is a good estimate for a hearty appetite.  Depending on the size of the hush puppies and the hunger level of the individual, however, this amount can vary.  For instance, if you are serving jumbo-sized hush puppies as part of a meal, one may be enough to satisfy cravings.  On the other hand, if you are serving mini-sized hush puppies as part of an appetizer before a larger meal, three or four might be better suited for each person.