Can I charge for a twice baked potato on my menu? Right now I include them free as a choice of side dishes. What I want to do is take it off the menu and re-introduce it.  Willing to go a little upscale if needed.

Yes you can, go for it!  I’d suggest starting with an Idaho® Russet Burbank variety and if appropriate to your menu, list the source as “Idaho” to bring a little value to the menu copy.

You might also think about moving it to the center of the plate, especially at lunch time as shown in the examples below. Using truffle oil also really allows the potato to become a twice baked money maker.