A-Ha! Apparently we weren't the only family to enjoy this comfort food:
Here's a link to a recipe which is similar to what I use.
I make a white sauce and throw in a can of peas (canned peas only, no frozen, they aren't mushy enough) and serve it on toast. When I'm feeling really fancy, we throw in a can of tiny shrimp.
Heh heh, tiny shrimp.