I don't like to cook so when I do it's in quantity.
You can roast a small turkey(or a chicken), take all the meat off the bone, cut the breast in half, wrap and freeze them. Separate the rest of the good meat into baggies and freeze. Make soup with the bones, portion off and freeze.
Make mashed potatoes(I do the whole bag). Cook some sliced carrots(the whole bag again)in a can of chicken or turkey broth, use the broth when making the gravy for your turkey(I use 2 pkgs gravy mix added to the pan drippings, the broth from the carrots and water). Freeze 1.5 cup portions of the gravy in ziploc bags. After our meal I just mash the leftover carrots into the potatoes. I usually stir a can of corn in before freezing them.
When you heat the potatoes, they'll be a little watery when they thaw but I thaw them in a covered nonstick frying pan and drain it off, then throw in some butter and cook them til they're dry and brown.
We do this every Thanksgiving, and have a hot meal when I cook it, then sandwiches for supper and the frozen components for about 3-4 nice turkey, mashed potato/carrots/corn, gravy dinners. Of course they don't have to be served together, you can thaw the turkey and make sandwiches. And use the potatoes with something else. If you throw some sauteed onion and sausage(or hamburger or diced roast beef)into them you can make a nice hash.