Golden, bite-sized churros with a crisp exterior and soft, airy interior, dusted with cinnamon sugar and cooked in an air fryer.
1 cup all-purpose flour
2 tablespoons cornstarch (optional)
1/4 teaspoon salt
1 teaspoon baking powder
2 tablespoons granulated sugar
2 tablespoons unsalted butter, melted
1/2 cup whole milk
1 large egg
1 teaspoon vanilla extract
1/2 cup granulated sugar (for coating)
1 teaspoon ground cinnamon (for coating)
Cooking spray or light oil