SOUP! It is the easiest most omnivore-friendly way to have meatless meals.
I posted a few soup recipes in the soup thread as well as the favorite recipes thread, all the ones I posted are very frugal. Some other ideas -
bean burritos -
1 lb. ground turkey or beef
1 can (or if you really want to save money 1.5 C cooked...which starts as 1/2 C dry) EACH of pinto, kidney and black beans
1 onion, chopped
1 tbsp. olive oil
1 package taco seasoning (again, to save money use your own seasonings)
Cook onion and ground meat in oil. Add beans and seasoning, cook together just to get everything mixed and warm. Delicious and easy burrito filling.
I also posted a chimichanga recipe in the fav recipe thread, it's very cheap if you just use 1 piece of cheap chicken meat (like a bone-in breasts or a couple thighs) then pick out the bones once it's cooked.
Making a roast (pot roast or whole chicken or turkey) and then using the leftover meat in recipes can be really frugal. I cook a whole chicken and serve it with lots of sides so we don't use too much meat on the first night. Then I pick all the meat off and shred/chop, then freeze in 1-2 C portions. Then take the bones and leftover skin and put in the crock pot with water and some seasonings and veggies, also a little ACV to get all those minerals out of the bones. Let it cook for at least 24 hours on low. Then strain into a bowl and cool in the fridge. Throw away bones and veggies, but save and chop up the little bit of meat (there should be about a cup). Skim off the fat. You can use this stock in recipes or make into chicken and rice soup. To make the soup add the meat from the stock back into it, then put in a stock pot and add about 1 C of brown rice. Also add some more seasonings (like bay leaves, sage, thyme, garlic, marjoram). Simmer for about 10-15 minutes then add chopped carrots and celery, then simmer for another 15-25 minutes or so until the rice and veggies are cooked. This is SO good with bread and butter.
With the leftover meat make wraps -
chicken salad wraps (chopped chicken, chopped veggies like olives, bell pepper, onions, etc, lettuce, crutons, a little grated Parmesan and salad dressing of your choice all wrapped up in a tortilla)
asian chicken salad wraps (chopped chicken, chinese fried noodles, green onions, mandarin oranges, sprouts, grated carrots, and sesame dressing. I have a recipe if you're interested)
buffalo wraps (chicken, lettuce, buffalo sauce)
You can also use the meat in soups, tacos, enchiladas, empanadas, casseroles, pita fillings, stir fry etc.
Homemade pizza is really cheap. We like BBQ chicken pizza using leftover shredded chicken.
Breakfast burritos can be pretty cheap too, if you make a lot of potatoes and eggs to increase the filling. 1 lb turkey sausage or ground turkey with seasonings to make breakfast sausage (I have a recipe if you want it), 4-5 potatoes, tossed in oil and paprika, garlic powder, onion powder, salt and peper, then baked. 6 or 7 scrambled eggs. Mix it all together and fill tortillas.