Preheat the oven to 350°F (175°C). Butter a 9″ x 13” pan or line with parchment paper.
In a large bowl, whisk flour, cornmeal, baking powder, sugar, and salt.
Add eggs, butter or oil, and milk. Whisk to combine.
Pour into the prepared pan and smooth into an even layer.
Bake for 20-25 minutes, until springy to the touch (internal temperature should read about 175°F/80°C).
