Step 1

Preheat your oven to 450ºF (232ºC) and weigh out all of your ingredients, bringing the buttermilk and egg to room temperature.

Step 2

Place the sugar and melted butter in a large bowl and combine smooth with a whisk.

Step 3

Add the egg, oil and vanilla and whisk until combined.

Step 4

In a separate medium bowl, add the flour, baking powder, baking soda, nutmeg and salt. Mix to gently combine.

Step 5

Add half the dry mixture into the wet mixture, whisk gently until some of the flour remains, then add all the buttermilk, mix a little, and add the rest of the flour. Mix until just combined, do not over mix. The batter will be very wet and there will be a few lumps.

Step 6

Transfer the batter to a piping bag or a plastic bag with a corner cut off. (You can also just use a spoon and smooth out the tops.)

Step 7

Grease the donut tray with cake goop or your favorite pan release, and fill each cavity 1/2 to 3/4 of the way full of batter.

Step 8

Bake at 450ºF (232ºC) for 7-9 minutes. When the tops are firm and bounce back when you touch them, they're done.

Step 9

Cool the donuts in the pan for 5 minutes, then flip them out onto a wire rack to cool completely. Make sure to not glaze while warm.

Step 10

Sift your powdered sugar, this will prevent your glaze from having lumps.

Step 11

In a medium bowl, whisk together powdered sugar and water (or milk) until desired consistency. Add 1/4 tsp more water at a time until it's as thin as you like. If it becomes too thin, add more powdered sugar. If your glaze has lumps, you can use a hand mixer to smooth it out.

Step 12

If you want a more opaque glaze, add a few drops of white food coloring to the glaze and divide into bowls. Add your favorite colors and stir.

Step 13

Place the wire rack of donuts on top of a sheet pan to catch extra glaze drips. Grasp each donut by the sides and dunk into the glaze, letting it drain off for a few seconds. Then flip over and place the donut back onto the wire rack. Top with sprinkles immediately, as the glaze firms up quickly.

Step 14

Place into a plastic or paper bag and store at room temperature for up to 3 days, they will continue to soften over time.