Put bacon grease in a 10-inch cast iron skillet. While the oven is preheating, place skillet in oven.
Meanwhile, mix together cornmeal (2 cups), flour (1/2 cup), baking powder (2 teaspoons), baking soda (1 teaspoon), and kosher salt (1 teaspoon). Add the milk (2 cups), the beaten egg, and honey (1/4 cup), and stir to combine well.
When the oven is preheated, remove the skillet. Swirl it (carefully!) to make sure bacon grease or oil covers the entire bottom and a little bit up the sides. Dump the remaining grease into the batter and mix to combine.
Pour the batter into the skillet. It will sizzle and crisp up around the edges. Place in oven and bake for 20-25 minutes, or until a toothpick inserted in the center comes out clean.
Allow to cool for 10 minutes before cutting.
Serve with butter and extra honey for drizzling on top, if desired.
The provided nutrition information does not include any added sodium from seasoning to taste, any optional ingredients, and it does not take brands into account. Feel free to calculate it yourself using this calculator or by adding the recipe to Yummly.