stretching meat

In an effort to cut back on grocery bills, I have been investigating ways to stretch meat. We like to make double batches of everything when we cook, so that we only have to cook once, but get to eat twice, but I'm interested in getting a double batch worth's of tacos, say, by using only one pound of ground beef.

Last week, I made chicken tacos. Using only one pound of chicken, I added tons of chopped onions and green peppers (frozen from last summer), made all the tacos up with half of a usual portion of the meat filling, and added a copious amount of mexican rice with diced tomatoes. The tacos tasted great and we were able to make many more than usual because of the addition of rice.

I've found several ideas and recipes online for things that we normally eat where the meat can be stretched:

• 1 chicken, 17 healthy meals--I don't even remember how to cut up a whole chicken, even though my mother has shown me over and over again.
• meatballs with oatmeal, cornmeal or rice
• black bean burgers--meatless but full of protein
• lentil and rice tacos--meatless again but I've never tried lentils that I know of
• sweet potato quesadillas--okay, this list is now meatless meals
• cornmeal everything--and I thought cornmeal was just for cornbread
• making meat into an accent instead of the main ingredient

If you are looking for new affordable meal ideas, you might want to check out this list of the Top 100 Blogs for the Frugal Gourmet.