We tend to spend an evening or morning shortly after arrival cooking things that can easily be reheated. We buy 96 oz frozen Stouffers lasagna. Surprisingly good and a nice meal with garlic bread and a salad. We make taco meat and sometimes spaghetti. We bake some chicken with potatoes and veggies. Again, all this pretty well done at once so it's just heat and serve the rest of the week.
We've also hit a local Sams and stocked up on frozen stuff that can be done in the oven quickly. Those little bite size quiches are a favorite of mine. The kids like pizza rolls and hot pockets. Another kid could live on the frozen chicken bits.
I also like a can of Campbell's chunky soup from time to time, but the rest of the family usually won't buy that. I have taken along chili when we had some in the freezer and they like that with fritoes, sour cream, and tomatoes.
Sheila