Heat oven to 400 degrees. Preheat an 8-inch cast-iron pan or pie dish. In a medium bowl, whisk together cornmeal, flour, sugar, baking soda, baking powder, and salt. In a small bowl, whisk together egg, buttermilk, and 1/4 cup oil. Fold wet ingredients into dry and mix until just combined.
Add remaining tablespoon of oil to preheated pan, swirling to coat the bottom. Pour in batter and smooth the top with a spatula. Bake until golden brown and a tester comes out clean from the center, 23 to 25 minutes. Brush with honey, then let cool. Cut into wedges.