In a large mixing bowl combine dry ingredients. Next, mix together egg, butter, and buttermilk until combined. Pour batter into a large, tall glass.
Heat up a deep fryer with vegetable, canola, or peanut oil to 375 degrees F.
Insert wooden skewers into the base of the hot dog. Then, dip the hot dog into the batter until coated. Fry corn dogs in deep fryer and cook 3-5 minutes until golden brown. Remove from hot oil with metal tongs and let cool on a plate lined with paper towels.
Let cool for 5 minutes and enjoy with a squeeze of mustard or ketchup.