Making Mini Powdered Sugar Donuts is a delightful process. Follow these simple steps to create your own batch:

1. Preheat Oven: Preheat your oven to 375°F (190°C). Grease a mini donut pan with cooking spray or butter.
2. Mix Dry Ingredients: In a medium bowl, whisk together the flour, granulated sugar, baking powder, baking soda, and salt until well combined.
3. Combine Wet Ingredients: In another bowl, mix the buttermilk, egg, melted butter, and vanilla extract. Whisk until smooth.
4. Combine Mixtures: Gradually add the wet ingredients to the dry ingredients, stirring gently until just combined. Be careful not to overmix.
5. Fill the Pan: Using a piping bag or a spoon, fill each cavity of the mini donut pan about 2/3 full with batter.
6. Bake: Place the pan in the preheated oven and bake for 10-12 minutes, or until the donuts are golden and a toothpick inserted into the center comes out clean.
7. Cool Slightly: Remove the pan from the oven and let the donuts cool in the pan for about 5 minutes. Then, gently transfer them to a wire rack to cool completely.
8. Coat in Powdered Sugar: Once the donuts are cool, toss them in powdered sugar until fully coated. Shake off any excess sugar.
9. Serve: Enjoy your mini donuts warm or at room temperature.

These steps will guide you through the enjoyable process of creating these amazing treats.