Cube Steak with Gravy
When the flour sets into the cube steak it simply means that the dryness has been moistened by the juices of the steak, so it is not dry anymore.
The gravy thickens slowly, do not add more of the flour mix until you are sure that it is done thickening. The gravy will thicken as it stands as well so it should be served very soon after cooking. Never leave the gravy unattended, you should be consistently stirring or adding.
The more milk and flour mix you add the less meat flavor. Be careful to taste often and not make so much gravy that the meat taste goes away.