At a WW2 camp I was at, s. o. s. was cheese and bacon on toast. Actually rather tasty.

I remember creamed chipped (dried) beef on toast from childhood. Haven't seen it for many years. I remember it favorably.

Also from childhood, canned baked beans re-cooked in a shallow casserole with cut-up Vienna sausage, Kraft prepared cheese and ketchup. Now that was trashy cooking too low for the white trash! But I liked it at the time. Also 'spanish rice' prepared much the same way. This was in the 1930s depression years.