Step 1

Preheat oven to 375 degrees F (190 degrees C). Grease 12 mini-donut tray.

Step 5

Mix the sugar, butter, and cinnamon powder in a large bowl.

Step 9

Stir in the milk, then mix in the baking powder and flour until just combined.

Step 13

Fill the prepared mini donut tray about half full.

Step 15

Bake in the preheated oven until the tops are lightly golden, 11 to12 minutes.

Step 19

While the donuts are baking, place the melted butter in a bowl.

Step 21

In a separate bowl, mix together sugar with the cinnamon. Remove donuts from the tray, dip each muffin in the melted butter, and roll in the sugar-cinnamon mixture. Let cool and serve.