I have a half-cup measuring cup, with rounded corners, so I packed that full of quinoa, and flipped the molded quinoa onto three plates. Then one portobello per plate, gill side up, with the stem pieces on top, some caramelized onions on top would also be good. Then several pieces of asparagus on the plates also. It looks really pretty, and tastes fantastic. Too bad my camera is broken. :/ It also took less than an hour, so it doesn't take too long.
The instructions make it sound pretty complicated, but it was actually pretty easy.