Preheat: Oven: Preheat to 180°C (355°F), grease doughnut pans.

Doughnut Maker: Preheat for 5 minutes.

Mix Dry Ingredients: Whisk cake flour, sugar, baking powder, and salt in a bowl.

Combine Wet Ingredients: Add milk, butter, vanilla, and egg to dry ingredients. Mix until smooth and thick.

Bake: Oven: Fill doughnut pans and bake for 15 minutes.

Doughnut Maker: Cook for 3 minutes.

Cool and Coat: Cool doughnuts and dip in melted butter, then cinnamon-sugar mixture.

Enjoy fresh with coffee or tea.

Pair with a scoop of ice cream for dessert.

Batter should be thick for best results.

Use a piping bag to easily fill doughnut pans.

Store in an airtight container at room temperature for 2 days or in the fridge for up to 1 week.