I have taken a couple of large package of ground beef from Sam's and made the following things and frozen them. A pot of chili, spaghetti sauce, sloppy joes, meatballs, pressed out hamburger patties. I also just brown a couple of pounds of ground beef and divide it up for easy thawing for other recipes during the week. You also can make burritos using refried beans and taco seasoned ground beef. Wrap them up and freeze them in plastic wrap and foil. I just take them out of the freezer in the morning and heat them in the oven later. For chicken, I boil chicken breasts and shred them and add bbq sauce for bbq sandwiches. I also try to keep boiled shredded or cubed cooked chiken on hand for salads or wraps. I have also made Cheeseburger Pie and assembled it in an unbaked pie crust and frozen. Black beans with sausage freezes well too. Most of these you just need either some rice or a pasta or buns. But it's easy assembly on a busy day.
I'm not very good at recipes, I'm a little of this, little of that kind of cook. But I'll answer any questions if you have them.