add different vegtables and spices to make it taste a bit different each day.
Usually the main meal of the day was 2 cans of baked beans 1 fried onion pepper oregano for me (I'm a big guy) sometimes (if I could afford it) one or two fried frankfurters. If I felt really posh that day I would add a slice of cheese to the pan to melt it together with all the other goodies.
Disclaimer: A can of baked beans was around £0.30-0.40 then and everything else was much cheaper than now. I was usually buying an 'out-of-date' bread that was only few pence (sometimes for free). I was working! (I'm sure I'd be better off on JSA and other benefits)