Ahhhhh SR, I've been thinking about this a lot with two boys to feed. I started out with a lot of burgers and pizza, suprise. Next I moved on to stopping by Safeway on the way home and picking up a ready-to-go roasted chicken in the deli department, or a meatloaf, and the heat-em-up side dishes. That's really convienent.
Now I'm doing more real grocery shopping and planning out some meals. One thing I'm doing is getting a package of fresh chicken breasts, put them in tupperware with BBQ sauce for a few days, and pop them on the grill, doesn't take long for them to cook and it's really good. My boys didn't like spaghetti too much, but right now they like the rotary pasta (whatever it's called), I just mix in the meat / maranara sauce with the pasta and put it in tupperware, you can get a few meals out of that, again, just heat it up. Frozen vegetables are your friend - pour some in a bowl, add a little water and butter, and 3 minutes later have vegetables for everyone. We're buying a LOT of fruit too. That's a cool thing actually - seems like real, healthy food can be easy. Cut up some apples or oranges, just takes a minutes, and that's part of the meal. My boys ate a whole pineapple today. Healthy, and a treat for them. One of my boys does love tuna, so tuna sandwiches are a staple for him (I'm making lunches every day too). Mmmmm... stock your fridge with yogurt, that's handy to have around. I also always make sure I've got a packages of romain hearts in the fridge - seriously, rip off some lettuce, add some baby carrots or whatever, you've got a simple salad in under a minute.
It's kind of weird - I've EATEN all my life. But when it comes to WHAT TO MAKE it's taken a lot of doing. Yeah, I don't have a lot of time to make a lasagana or enchiladas. I'm still expanding my vision here, but we're not going hungry.