This is about as "cheap and easy" as it gets! We got a pork tenderloin @ $1.89/lb, sliced into 3/4" slices; there were 3-4 slices per pound. So these two lovely slices of meat were about a buck. Onions were around 70¢ for both. The can of mushrooms was 59¢. The beans were about 1/5 of a bag that cost under $3, so let's say 60¢. This is a great meal for 2 for well under $4! I did coat the onions and the meat with olive oil, as well as the bottom of the pan...and then sprinkled seasoned salt over the whole thing before I popped it into the oven. 350 for about 25 minutes. And then dinner! Low carb. Cheap. Easy. Pretty on the plate. And DELICIOUS!
This is on my plate. I cut up the onion (it still held its shape - if you like your onions mushy, slice it in half horizontally before roasting) and slathered it with butter after I took this picture. I have to say, this is a favorite meal of mine. If the onion is too carby for you, certainly eat just half of one, or substitute the root vegetable of your choice; just be aware that many root vegetables will take longer to cook, and may need a head start.