pre make shakes with milk, whey powder, 2 egg whites, and a handful of oats per shake. this way you have them ready to go and its whole food.
you could also make your own frozen dinners. just buy plastic containers and make chicken or beef with mixed veggies in brown rice. if you cooked it all at once once per weak and kept them frozen they would be fine.
i have yet to see a pre packaged meal that wasnt loaded with sodium and fillers.