Combine dry ingredients in a large mixing bowl including the all-purpose flour, confectioners sugar, baking powder, baking soda, and salt.
In a separate mixing bowl, whisk together the buttermilk, milk, beaten eggs, melted butter, and vanilla extract.
Heat a skillet or griddle to medium high heat, oiling the cooking surface using a basting brush to coat evenly.
Combine the two mixtures by pouring the wet mixture into the dry mixture, and stir just enough to incorporate all of the ingredients into a batter. Do not over-mix. Scoop or ladle the mixture onto the heated skillet or griddle in heaping ½ cup portions. Cook until both sides are browned and serve immediately.