Preheat a 10-inch cast-iron skillet in a 425 degrees F oven. Whisk 3/4 cup each cornmeal and whole-wheat flour, 3/4 teaspoon baking soda and 1/2 teaspoon salt in a bowl. Separately, whisk 1 3/4 cups buttermilk, 2 eggs, 1 tablespoon melted butter and 2 tablespoons honey. Mix the dry ingredients into the wet ingredients. Coat the hot skillet with cooking spray and add the batter. Bake until golden, 18 to 20 minutes.
Photograph by Antonis Achilleos