Preheat oven 400 deg.
In a mixing bowl, cream butter and sugar.
In a separate bowl, combine eggs and milk.
In a 3rd bowl, combine flour, cornmeal, baking powder and salt.
Alternate between adding a portion of the egg/milk mixture to the butter/sugar bowl, and adding a portion of the flour mixture to the butter/sugar bowl. Mix thoroughly each time.
after all ingredients are mixed, pour batter into a greased 13x9 baking pan.
Bake for 22-27 minutes.
Cut into squares. Serve warm.