01 -
Preheat oven to 425°F (220°C). Grease 15 donut tins in donut pans.
02 -
In a large bowl, beat butter, oil, and sugars together until well combined. Mix in eggs and vanilla. Beat in milk until combined.
03 -
Stir in flour, baking powder, baking soda, and salt until fully combined.
04 -
Spoon or pipe batter into prepared pans.
05 -
Bake for 9–15 minutes, or until donuts spring back when lightly touched.
06 -
Let donuts cool in the pan for 5 minutes.
07 -
Brush each donut lightly with melted butter.
08 -
Combine cinnamon and sugar in a plastic bag. Add donuts one at a time and gently shake to coat.