Lightly grease a 9x13 baking dish. Sprinkle
with a little cornmeal or flour. Combine the
cornmeal with the soda and salt. Stir in milk,
eggs, corn, and cheese. Mix well and set aside.
Brown the ground beef with the onions; drain
off all the fat. Stir in the beans, tomato
sauce, and taco seasoning. Spread half the
cornmeal mixture in the baking dish. Cover with
the meat mixture
and top with the rest of the cornmeal mixture.
At this point, you can cover the dish and
refrigerate it until an hour before you
plan to eat. Bake uncovered at 350° for about
an hour or until the topping is done.