1 medium head of cabbage
2 large onions
~4 cups water or stock (homemade)
~24oz tomato paste
whatever other extra vegetables you have lying around (peppers, mushrooms, etc.)
1.5lbs of ground beef/pork/whatever you've got
salt, black pepper, cumin, red pepper flakes, or whatever spices you like
Slice up cabbage into ~1"x1" strips, dice onions, other misc vegetables, throw in stockpot. Add water/stock and tomato paste. Add spices, mix and boil until somewhat cooked, add meat, add more spices, mix again, and cook until done.
Scale recipe up/down as needed; none of the ratios are too important. Freeze some of it. I keep it in 64oz deli "leftovers" containers and scoop portions out into a bowl at work to microwave.
Half hour of prep, one week of lunches, not too expensive, satiating as fuck.