We use the two burner gas range inside the van it is fed from the low pressure propane that also feed the Truma Aquago water heater, The space heater is a Webasto gazoline heather fed from the gas tank of the Promaster van converted by Safari Condo. Also have a microwave fed from the inverter/AGM batteries.
When camping for more than a day I really like the small 17 inches Blackstone griddle that I feed propane also from the main propane tank, while bypassing the gas regulator as the Blackstone needs a high pressure feed of propane. On this griddle I make eggs, toast, fish, meats, veggies. I also cook pasta/ sauces /soups by using a normal cooking pot sitting on the griddle. In short such griddle/plancha is cheap to buy. Got mine 2 years ago and I am planning to buy a second one as soon as the one I use breaks. The top of this griddle is made of cold rolled steel, once it is seasoned the eggs float on the surface using a minimal amount of oil. You clean the griddle using cold water while the griddle is very hot and scrape the surface with a scrapper, then you apply a coat of oil with a paper towel and the griddle is ready to be stored, fast and easy. Use a lid or a metal bowl that I fitted with a drawer handle and place over the food when needed, for example to get the eggs softly cooked on the top. (Hope I got some people hungry) I think I am ready to go out with my camper.