01 -
Preheat oven to 350°F (175°C) and grease a donut pan with butter or non-stick spray.
02 -
In a mixing bowl, whisk together the cake flour, baking powder, ground cinnamon, salt, and granulated sugar until well combined.
03 -
In a separate bowl, whisk together the buttermilk, melted butter, egg, and vanilla extract until smooth.
04 -
Pour the wet ingredients into the dry ingredients and stir until just combined, being careful not to overmix.
05 -
Spoon or pipe the batter into the greased donut pan, filling each mold about 2/3 full.
06 -
Bake in the preheated oven for 10-12 minutes or until the donuts are golden brown and spring back when lightly touched.
07 -
In a shallow bowl, combine the granulated sugar and ground cinnamon for the coating.
08 -
While donuts are still warm, carefully remove them from the pan and place on a wire rack. Dip each donut in melted butter, ensuring even coating, then roll in the cinnamon sugar mixture until fully coated.
09 -
Serve the donuts warm for the best texture and flavor. Optionally, sprinkle with additional cinnamon or powdered sugar for visual appeal.