Having one day a week that is dedicated to household chores includes precooking for the next few days. I love preparing several main courses~meatloaf, buffalo burgers, chicken veggie patties, etc. When doing this I know the whole family is taken care of, and I wont be tempted to be unhealthy. :o)
If there is enough time to do a couple sugar free jello salads with fresh fruit, and or veggie washing and precutting, veggie steaming, that is even better. Whole meals already prepared allows for more family time each evening.