Preheat oven to 375 degrees.
Prepare a 3 quart souffle dish by brushing with 2 tablespoons butter.
Combine dry ingredients in a bowl. In a separate bowl, combine egg yolks, milk and butter and pour into dry ingredients. Stir to combine but do not over mix. Fold in the chopped scallions.
Beat the egg white to firm peaks in a stainless steel bowl using a whip. Fold the beaten whites into the cornmeal mix and pour the batter into buttered dish. Place in the oven and bake for 1 hour.