Formula Field: Detecting if Another Field Has Text; ""If Contains *, Then...

Here's my formula idea: I want [Full Name] to display First, Middle, Last... but only show [Middle Name] if there is text in the field. Currently it shows up as an extra blank space, which doesn't look as neat. I know the first part of the formula isn't set up correctly because no middle names are showing (because no one has the middle name "*"), but this is just to get across the idea that if any text is detected, show middle name.

If([Middle Name]="*", ([First Name]&" "&[Middle Name]&" "&[Last Name]), ([First Name]&" "&[Last Name]))