Preheat oven to 400F. Brown beef in a large saute pan. Then add the rest of the filling ingredients and simmer for 5 min. Place the mixture into a 8×11 pan sprayed lightly with cooking spray.
Mix together the cornmeal and milk and set aside for 5 min. Meanwhile stir together the flour, baking powder, salt and sugar. Stir into the cornmeal mixture the egg and melted butter. Add this mixture to the dry ingredients and stir only to combine, the batter will still be lumpy. Place the batter over the beef mixture.
Bake for 25 min. until the cornmeal is browned slightly and cooked through.