I recall I used to kind of measure meat against the size of my thumb -- I read a book once called The Portion Control Diet which was very interesting, and I believe it said that the top part of your thumb is equivalent to 1/2 tbsp??  Anyway, I'd take a piece of meat the size of my whole thumb and that was my meat for the meal.  I'd have a small spoon of whatever carb, and then a couple green beans or something.  Now (1 year post-op) I've graduated to meat portions closer to 1/2 the size of my palm.  I figure it's about 2-3 oz.  I'm always worried about the protein portion of the meal over anything else. :)

They sell those steam-in-bag things in fairly small sizes; they even have brown rice (it's pretty good).  One of those would last you several meals and be pretty flexible.  Get some chicken and a couple small freezer bags of veggies and you're set for a while.   Speaking of chicken, a bag of those pre-cooked Tyson breast strips would be very easy for you, too, and one bag can stretch a loooooong way for you.

Some possibilities are: 
plain rice with a little chicken and some green beans
an ultra-small portion of chicken fried rice with egg beaters, green peas and a little soy sauce
a mini-casserole with some chicken, broccoli, cream soup, and a little low-fat cheddar cheese (bake in a muffin tin)
a Mexican meal: chicken & rice with some taco seasoning and some pinto beans

Lately I've been doing the frozen breast strips on some of the preshredded lettuce with some black olives, diced tomato, mexican cheese, and some light Caesar vinaigrette.  You could make as little as you want and most of the ingredients, except the lettuce, can keep for a while.

I hope this helps!  Congratulations on your apartment!!!!! :)

Let me know if you need any more ideas; I don't work with beef a lot, it doesn't sit well, which is why all the chicken.  A nice, tender cut of pork will work well as will turkey, and those can be easily substituted into any of the above.

OOH, I just remembered one of my recent breakfast faves: A tbsp or 2 of egg beaters scrambled up with a sprinkling of cheese and a bit of chopped turkey bacon (the pre-cooked kind you'd sprinkle on your salad, sold in little resealable bags -- Kroger has their own brand).  I put this on 1/2 a Flat-Out wrap with a little Miracle Whip... mmmmm!  The bread for the wrap has 5 g of protein on its own, so it's a great protein option for breakfast.  If you can't do bread yet, just do the egg!  Fast and easy.