You should be able to make just about anything you want with those items.
I have a electric skillet, microwave, large toaster oven, and a instant pot and I can make anything I could make at home in the truck. Tonight I made a couple of pounds of taco meat. Friday I made a keto friendly pizza crust out of eggs and cheese and finished it off with some real good pizza sauce, cheese, and lots of pepperoni.
I also have a 12 volt 1.4 cu foot freezer where my passenger seat was in addition to my fridge. That way I don’t have to shop as often to eat good and healthy on the road.