Gosh, it's hard to pick. My mom was such a good cook - plain, simple food. One of my favorites were her homemade, raised doughnuts. Mmmmmm good.
She also made a delicious stewed chicken, with dumplings and a white gravy that I really liked.
She also had her dutch oven (as someone else mentioned). She made everything in that, and I was dumb, dumb, dumb, not to take it when she passed away.
She "sucked my husband in" with her food.