Grease the donut pan with non-stick spray or with melted butter. Set aside.
Whisk the flour, baking powder, baking soda, salt, ground cinnamon, ground nutmeg, and granulated sugar together in a medium bowl. Set aside.
In another bowl, take yogurt, milk, butter, and vanilla. Whisk well to combine.
Add the dry ingredients into the wet mixture and stir until just combined. Do not overmix.
Baking The Donuts
Fill the batter into a large piping bag; there is no need for the tip. Cut the end of the piping bag and pipe the batter into each donut cup evenly up to ¾ way full.
Do not overfill as these donuts will rise well.
If you do not have a piping bag, you can also use a Ziploc bag. Fill the Ziploc bag with the batter, cut the corner and fill the donut pan.
Bake the donuts into the preheated oven for 10 minutes or until the edges are lightly brown.
Do not overbake.
Remove from the oven and allow the donuts to cool down in the pan for 2 minutes.
Then transfer the donuts onto a wire rack and let them cool completely.
Coating The Donuts With Powdered Sugar
Once donuts are cooled, take powdered sugar in a bowl.
Deep each donut into the powdered sugar and serve.
Serving and Storing Suggestions
Powdered Sugar Donuts are best eaten the same day. However, they may be stored in an airtight container at room temperature for two days.
It is best to serve donuts right away as powdered sugar will disappear upon keeping longer.
Or, if you are not eating donuts immediately, coat them with powdered sugar right before serving.
Notes
You can skip adding ground nutmeg if you do not prefer it. Also, add more spice of your choice if you want.
Using a large piping bag is an easier way to fill the batter into the donut pan. But instead of the piping bag, you can also use a Ziploc bag, fill it with the batter, cut the corner and fill the donut pan.
Do not overfill the donut pan; fill it only up to ⅔ to ¾ way full as donuts will rise well.
These donuts are quick to bake; it takes only 10 minutes. So keep an eye after 8 minutes and do not overbake the donuts.
Coat the donuts with powdered sugar right before serving as powdered sugar will disappear upon keeping longer.