adapted and updated from Leslie Holmes' Pie Plate Corn Bread from School Maize: A project of the Wilmington Education Association 1983 Wilmington, Ohio
Preheat oven to 350. Butter a standard 9-inch pie plate. Set aside.
In a large bowl or bowl of a standmixer, whisk together the sour cream and buttermilk. Stir in the dry ingredients until a thick, uniform batter forms.
Scrape into the prepared pie plate and bake 40 minutes or until a toothpick inserted in the center of the pan comes out clean. Cool in pan on wire rack. Serve warm or at room temperature.