My thread is back from the dead! Perfect for Halloween.
Recently we decided to try the Omnia stove-top oven after watching a video by "From She To Me" on YouTube. We made mini-scones in it using the silicone muffin insert, and they turned out quite well. So, if you have propane cooktop in your camper van, this may very well be worth a try. As an FYI, we bought the oven and several options, including the grate, the pair of silicone forms that fit into the oven, the silicone form for muffins, and the zipper bag. It's very nicely sized for use in a camper van, and with a bit of patience and an instant read oven thermometer, it's not particularly difficult to turn out very nice results on a scale that makes sense in a camper van. One less electric appliance in the van is a huge win in our book.
From She To Me video (fast forward to 17:24 to see her show off the Omnia oven):