Preheat oven to 350 degrees. Line 2 baking sheets with parchment (preferred) or lightly grease.
In a large bowl, add the cornmeal, oats, butter and the 1 cup of boiling water. Stir; let stand for about 15 minutes so the oats absorb the water.
Add the remaining ingredients, stirring in only as much flour to make a stiff dough.
Turn out on lightly floured surface and knead until smooth...maybe about 2 minutes. Divide dough in half. Roll to about 1/4-inch thickness. Cut with biscuit-shaped cookie cutter or use anything you have handy (your dogs won't care, believe me!! Fancy just pleases MY eye). Place on prepared baking sheets. Repeat with the other half of the dough.
Bake at 350 degrees for 35-40 minutes. Turn off oven and let the biscuits remain in the oven until it's totally cool. This dries the biscuits.
Store in a covered container.