Expanding objects with a filling

Hi there,

I wonder of there is a way to expand objects with a filling, without creating the outside lines of the swatches you made to create an filling.

Image may be NSFW.
Clik here to view.

I add a printscreen... The first F is the filling, the second is an outline view of the expanded filling and the last one i wanna create. The way i create is, deleting the squares and use pathfinder but it take a lot time to do.

Thanks