Muffin Tin Donuts

Ingredients 

Donuts 

• 2 ¾ cups all-purpose flour 
• 1 cup sugar 
• ¼ cup cornstarch 
• 1 tablespoon baking powder 
• ½ teaspoon ground nutmeg 
• 1 cup buttermilk 
• 8 tablespoons salted butter, melted 
• 2 large eggs plus 1 large yolk 
• 1/4 tsp. Cinnamon 

Coating 

• 1 cup sugar 
• 2 teaspoons ground cinnamon
• 8 tablespoons butter, melted

Directions 

1. For the donuts: Adjust oven rack to middle position and heat oven to 400 degrees. Spray 12-cup muffin tin with vegetable oil spray. 
2. Whisk flour, sugar, cornstarch, baking powder, cinnamon and nutmeg together in bowl. 
3. Whisk buttermilk, melted butter, and eggs and yolk together in separate bowl. Add wet ingredients to dry ingredients and stir with rubber spatula until just combined.
4. Scoop batter into prepared tin. 
5. Bake until doughnuts are lightly browned and toothpick inserted in center comes out clean, 19 to 22 minutes. Let doughnuts cool in tin for 5 minutes.
6. For the coating: Whisk sugar and cinnamon together in bowl. Remove doughnuts from tin. Working with 1 doughnut at a time, brush all over with melted butter, then roll in cinnamon sugar, pressing lightly to adhere. 
7. Transfer to wire rack and let cool for 15 minutes.

Adapted from: https://www.americastestkitchen.com/recipes/7427-muffin-tin-doughnuts