Hi R.,
Wow, look at all those responses! We're probably having burgers tonight, not much help to you, lol!
Something that works for us is to put chicken breasts (brown first if you want), carrots, potatoes, onion, 1 stalk celery, seasonings of choice, and a couple cups water or broth in the crockpot. Cook all day on low, it is ready when you are. nice if you are going on an outing and may be tired when you return but you still want a good supper.
You can also brown up some pork chops (or not bother), put them in the crockpot with a couple onions (again, sauteed or not, as you wish), dump a 16-oz (or thereabouts ) bottle of barbecue sauce (or equivalent amount of home-made) over all, and cook as above.
Ribs are also great in the crockpot, or in the oven if you are home to babysit them and if heating up your kitchen is not an issue (we don't have central air, so it IS an issue for us in summer).
Sometimes in the summer we just make a meal of sweet corn.
Have you tried frozen pirogies? We thaw them in hot water, then fry in small amount of butter/margarine with onions.
I liked the "breakfast for dinner" idea someone mentioned; I didn't read all responses though.
Do you have a grill? It's not just for hot dogs and burgers. You can do shish-ke-babs, chicken, fish, veggies, fruit, eggplant, whatever.
If you want my rib recipe let me know, it is from a La Leche League cookbook. It includes a recipe for home-made barbecue sauce.
Libraries have lots of cookbooks you can borrow, you may get some good ideas there too. You can always copy the recipe if you decide you like it enough to do again.
Ask your older girls to look in the cookbook and see what sounds good to them, and especially if they'd be willing to help make it.
Good luck and have fun!
K. Z.