Hamburger Cabbage Casserole

1 lb ground meat (I've done beef and venison, both were fine)
1 large onion, chopped
1/2 cup uncooked instant rice (I use one of the little baggies that the instant rice comes in, this is my one and only use for instant rice in baggies, it is more expensive to buy rice that way but I find the ease of this recipe makes up for spending a bit more here and there)
1 can of Campbell's tomato soup
1 can of water using Campbell's can
4 cups of shredded cabbage or one bag of cole slaw (I get the cole slaw, again for me this recipe is about convenience not cost)

1) Heat oven to 400.
2) Cook meat and onion in skillet until meat is done.  Stir in remaining ingredients.
3) Spoon into ungreased casserole dish.  I have a rectangular casserole dish from Williams Sonoma that is slightly smaller than 13x9 that works great.  A bridal shower gift from my cousin Karen and I think of her each time I use it.
4) Cover and bake about 45 minutes.  I use tinfoil to cover the casserole since it didn't come with a lid.

My kids LOVE this casserole.  They love everything about it.  I try to plan on making it when we have a bad snowstorm because it really warms up the house and the kids say it warms them through and through.  It is kind of like an unstuffed cabbage type dish.  It makes good leftovers too and heats up nicely in the microwave.