Have all the ingredients at room temperature. Preheat the oven to 425 degrees. Grease a pan (or cast-iron skillet) with butter or oil and place it in the oven until sizzling hot.
Sift the flour, baking powder, sugar and salt together into a mixing bowl. Add the cornmeal. Make a depression in the dry ingredients and crack the egg into it. Break the yolk and mix it gently, then add the melted butter, milk and cheese, blending all the ingredients with a few rapid strokes. Pour the mixture into the hot pan and bake for 20 to 25 minutes.
Serve with a chunk of Matos cheese and a glass of crisp Viognier wine. Bon appetit!