I cut on top of my ironing board regularly. I have two cutting mats the same size and just stack one on top of the other. It makes the surface firm enough to cut on. My ironing board is covered by one of those boards that makes it bigger, which I covered with Warm and Natural and then fabric.
Like I said, works for me. I don't have room for a table. The ironing board is my work surface.
Dina