@taxlady Here's a basic cornbread recipe, that I just increased the masa in, and reduced the flour, and increased the milk by ¼ c. The original recipe had 1/4 c sugar as an option, but I have just 2 tsp. Another way of making it, I remember from an old James Beard book, is using heavy cream in place of the milk and butter, which is easier, if you have that on hand.
1¼ c masa harina
3/4 c AP flour
4 tsp baking powder
3/4 tsp salt
2 tsp sugar (or as desired)
1¼ c milk
2 eggs, beaten
1/4 c melted butter
Grease a 9x9 pan, lining with parchment, if desired.
Whisk together the dry ingredients in a mixing bowl, then make a well in it. Add the milk and eggs, and beat together briefly, followed by the butter, then whisk together with the dry ingredients. Pour into pan, leveling the top, and let rest 10 minutes, while preheating oven to 425°. Bake about 25 minutes, or until it tests done, with a toothpick.