We have worked out a pretty decent system for evening camp meals that don't take to long.
We pre-cook food at home and vacuum seal it, and freeze it. Each morning we put that nights supper out to thaw. We try to find a way to thaw it by that night without it getting to hot. Sometimes we thaw it in a small softside lunch cooler. Then when we get back to camp we get both burners on our little Coleman camp stove going. One burner we put a pot in with the sealed meal in it. The other burner we put a pot on and boil water for noodles, instant potatoes, whatever our meal requires or a side. Things like beef stew, chili, spaghetti, chicken ala king are staples. It lets us have our evening meal prepared quick, fairly clean, and easy without a big effort cooking. We are worn out and ready for food and sleep by then.