We freeze chili, dumplings, meat/veggie sauces, curry, soups, stews, homemade pizza pockets…
On days when we don’t feel like cooking (which for me is basically all weekdays), we will eat dumplings/potstickers/gyoza, or I will make a pot of rice in the pressure cooker (literally one cup of rice , one cup of water, press one button, and done) and pour soup or a sauce over it. Or just noodles with eggs and veggies added directly to the pot and using the water the noodles were cooked in as a soup base. Or just a hearty stew - if you put veggies, a starch (like pasta or potatoes), and a meat/bean in it, then you basically have all your nutrients in one bowl.
Burritos also freeze well, and if you stuff it with rice, beans, sautéed veggies, and meat, then you have all your food groups in one thing that can be microwaved or popped in the toaster oven.
You can also boil several eggs at one time and then keep them in your fridge. When hungry, take a hard boiled egg, slice/mash it, add mayo, put it on bread. And voila…egg salad sandwich. Or just eat the hard boiled egg as is…which is what I do because mashing an egg with mayo is sometimes too much work.
I also prefer making things that can be cooked/warmed up in one pot/pan, thereby minimizing clean up.