What about making some meals & vac sealing them? Then you could just put it in the fridge for the day & heat it up over the stove? This is what we do on big trips just to take the pressure off. Great for those nights when you've been travelling all day & don't have much daylight or energy left!
I have book called Caravan Chef that I found very useful while camping. Includes things like
Savoury Omlettes
Chicken Noodle Soup
Pasta dishes
Stir Fried Rice
Chicken Risotto
Veggie Risotto
Chicken Casserole
Stir Fried Beef & Veggies
Salmon Rissoles
Curries
All done on the stove too.

Good luck!