Pre-heat oven to 400ºF (204ºC).

Prepare an 8 x 8 inch (20 cm x 20 cm) baking dish by spraying all sides with cooking spray or butter. Cover with parchment paper and then lightly spray the parchment paper as well.

In a medium bowl mix the yellow cornmeal, all purpose flour, sugar, baking powder and salt. Stir well and set aside.

In a large bowl whisk the milk, egg, and melted butter. Then, add the dry ingredients and mix until well combined.

Pour batter into prepared baking dish and bake for 20-25 minutes or until a toothpick inserted in the middle comes out clean. Serve warm.