saving some $$ on meat

I'm sure everyone knows by now that meat is super pricey these days.  I'm pretty good at couponing and saving money on everything else... except meat! I just always seem to wonder up and down the meat aisle trying to find something reasonably priced that's not full of fat and is somewhat edible (not chitlins!!)  I for one could give up meat, but with a man to feed,  meat must be part of the meal. I try to stock up when meat goes on sale, but I either forget it's in the freezer or don't leave enough time to defrost it! So lately I have been "stretching" my ground meat. This isn't something new and I'm not brilliant for doing this, but I just wanted to let people know that it does work and it's tasty! Whenever I'm using ground beef to make something like meatballs, hamburgers, tacos etc. I will add a can of black beans , drained and mashed ( if needed)  to make more "meat". For example, last week I used 1/3 lb of ground beef mixed with half a can of mashed beans (and bread crumbs, eggs, seasonings, etc.) to make meatballs for meatball subs. We had enough to make two huge sandwiches and even had lots of leftover meatballs! I didn't even tell Adam I did it and he had no clue (until he reads this of course). Tonight, we are having tacos (you know the taco kits). The instructions say to use 1 lb. of meat but I always just use 1/2 lb with one can of beans!  This makes it healthier since beans are full of good protein and fiber and they are only like 60 cents a can! and no, we don't eat ground beef with beans every meal cause that would be weird and boring! Anybody else have any good tips on saving money on meat? I would LOVE to know!!!