Giving credit where it is due, I got the cobbler recipe here:
Where there is a plethora of good dutch oven recipes!
My Sweet Wife provided me with an unbreakable plastic wide-mouth jar that I think vitamins or some such came in. I printed out the recipe above and taped it to the side of the jar. Then I put all the dry ingredients for one cobbler in the jar (except for the cinnamon that gets sprinkled on top.)
No open sugar or flour bags to spill or draw bugs in the RV. All of these ingredients are pre-measured and ready to go quickly. And of course the jar gets re-used just about every trip!