- Preheat the oven to 400F. Lightly butter a 9-inch square-baking pan.
- Combine the flour, cornmeal, sugar, baking powder, baking soda and salt in a bowl. Whisk together the pumpkin puree, eggs, butter, honey, buttermilk and orange zest in a separate bowl. Stir the flour mixture into the pumpkin mixture until moistened; transfer to the prepared baking pan.
- Bake until the cornbread pulls away from the sides of the pans and a toothpick inserted into the center comes out clean, 20-22 minutes. Cool in the pan 5 minutes. Remove from the pan and cook on a wire rack at least 10 minutes before cutting.