One thing I've started exploring lately is freezer meals. It's basically like making your own "frozen dinners" and you can make them in individual portions, family size, or anything in between. You can get these out when you're hungry, pop 'em in the oven/microwave, and eat when your food is cooked. It's that easy.
I'm working through the recipes here:
http://thrivinghomeblog.com/healthy-recipes-index/healthy-freezer-meals-recipes/This philosophy is all about doing a ton of prep/cooking for a few hours one day, and then resting on your laurels for a week or two (or longer, with more freezer space). Anything that lets me not cook when I get home on a weekday is a good thing in my book. It facilitates buying in bulk, which is usually cheaper. I always add extra veggies and make the dishes as healthy as I want to.
I recently bought 2 of these 18 pc sets for $23 each at Costco:
http://thesweethome.com/reviews/the-best-food-storage-containers/They're the best rated food storage containers on the market, and they're glass (safer), water/airtight, oven/microwave/dishwasher/freezer safe! They come out to <$2.56 per container, which is a great deal. The lids are guaranteed for life, pyrex is guaranteed for a shorter duration.
I can prep my soon to be frozen lasagna in one of these containers, and freeze it. When I want to cook it, I can put the container directly from the fridge to oven! So easy!
I've only been using these for a short while, but they seem high quality and as I've had other pyrex containers in the past, I expect these will last a very long time.