I keep it pretty simple. I stock up on meat when it is on sale and go from there.
Today boneless chciken breast was $1.99lb so I bought two huge packages..probably 8 nights worth of meals with leftovers. I also bought ground beef on sale and have two boneless pork roasts as well as a ton of leftover ham in the freezer.
So I will just create meals from them. Like..chicken will be chicken soup, chicken potpie, buffalo chicken, grilled chicken, stirfry chicken, etc..
Ground beef will be used for pasta sauce, beef and rice enchiladas, hamburger soup, grilled hamburgers, etc.
Pork will be cranberry pork roast and bbq pulled pork.
Ham..ham and potato soup, ham and hash brown casserole, ham and cheese quiche and spiral ham with potatoes and veggies.
Most of these will have leftovers to freeze or to eat later in the week.
So by stocking up on some meat I will have enough for almost 21 nights of dinners. Not bad considering I spent about $25 on the meat today.
Hope this helps give you some ideas!