Here’s another one that my wife has made - Beefy Roll-up
mrfood.com/recipe_detail.aspx?item_guid=dce7cce9-bd65-4cd4-b13d-97fd30cdb6e1
Basically you take a refrigerated pizza dough (I like the one from Trader Joe for about $1), roll it flat, toss in half a pound of ground meat, some frozen spinach, basil leaves, some mozzarella, and assorted other odds and ends, roll it up like a jelly-roll, and bake for about 20 minutes. It’s pretty economical (4-5 servings on half a pound of meat) and it’s easy to double.
Another good way to stretch a pound of meat is a stir fry. I like to use pork, but beef and chicken work too. Just cut the meat thin, and the secret is to add a lot of vegetables - carrot, onion or green onion, bell pepper, ginger, garlic, mushroom, broccoli, shredded cabbage are all good choices (just choose a few though, you don’t want a hodgepodge). The other secret is to be generous with the rice. And for the sauce throw in some Asian hot sauce like Sriracha, because that will force people to eat more slowly.
The Costco by me sells bonelss pork tenderloins at a pretty good price - it’s like $1.89 per pound for the whole 5-6 pound tenderloin, and it’s all usable - very little fat, not much waste. You can slice it to whatever thickness you want. It works very well for pork chops, and you can stretch it by cutting thinner portions - 3-4 ounces is really a sufficient serving in terms of protein and iron. A good cheap accompaniment would be cabbage, boiled or sauteed.
As summer months approach, also check if there is a local farmer’s market. Sometimes you can get good deals on fresh vegetables, especially if you go close to the end.