Preheat oven to 350°F.
Butter donut shaped baking pans generously and dust lightly with flour, tapping out any excess.
Add flour mixture to butter mixture, 1/2 cup at a time, alternating with 1/2 cup milk.
Fill prepared baking pans 2/3 full.
Bake for about 1/2 hour at 350°F or until donuts are done.
Remove immediately from pans, roll in melted butter, then in 1/2 cup confectioners' sugar and 1 teaspoon cinnamon.
Makes 1 dozen.