If you have the funds, or happen upon one in a thrift store, consider buying a vacuum sealer for your leftovers, or as I call them “my stash of MRE’s”.
I have had a FoodSaver for 6 or so years, and to me it is worth every penny I paid for it. I use it at least once almost every week.
I have found that rice and potatoes don’t freeze well, but freeze in pint bags almost everything else that I cook.
This keeps me from having to eat something til I’m sick of it, and means I always have a small assortment of options in the freezer when I don’t feel like cooking.
I leave on every trip with my small freezer filled with these, along with a few defrosting in the frig to eat on drive days.
Chili, soups, beef/chicken and noodles, pasta recipes of all kinds, meatloaf, baked ham, etc., as well as raw meats portioned out for one or two meals.
The vacuum sealing helps everything keep better in the freezer, makes things very space saving and microwaving is a snap or one could even put the bag into a pot of boiling water.