When I think of down home cooking - "not the fancy stuff" - but the foods I'd ask my mom to make when I was home visiting, I think of...
Boston baked beans with salt pork
haddock chowder
American chop suey
boiled dinner
blueberry pie
fish n chips w/ coleslaw
hermit cookies/bars
pea soup with ham (you can stand a spoon up in it) & cornbread
and then there's the stuff that you can't find anywhere but New England - like marshmallow fluff, CoffeeTime syrup, and OnePie pie fillings.