I just thought of a couple more.
I love sausage, so if you don't quit reading.
In a medium-ish sauce pan, I throw a few sausages in a rice pilaf mix. Cook according to the directions on the box (minus any butter or margarine, the sausage drippings will take care of that for you) and you're done. If the sausage is frozen, cook it in some water a few minutes, then throw the rice in.
A 1 lb. pound rope of kielbassa and a bag of a frozen veggie mix you like has endless possibilities. I usually mix up a sauce mix with soy, water and corn starch, and whatever spices strike your fancy.
Another easy fave around here: Buy some nice sliced roast beef at your deli, or use some leftover steak you have. (I have even used some leftover hamburger patties for this) Warm the meat in a small sauce pan with some boullion. Saute peppers, mushrooms, onions, garlic (in whatever combination you like). Heat oven to broil, or if you don't have broil 350 degrees or so will do.
Split some hoagie style sandwich buns.
Open the buns up on a baking sheet. Add meat, veggies, and a few slices of a cheese you like. Heat in the oven until the cheese melts. Serve the leftover buollion as an au jus type sauce if you like.