Add the eggs, oil, and buttermilk to a large bowl and whisk until completely combined. Whisk in the cake mix.

Place donut batter into a large Ziploc bag. Cut one end and pipe the donuts in the donut pan.

Bake for 8 minutes until a toothpick comes out clean.

For the glaze, add the powdered sugar to a mixing bowl. Pour in the milk, add the vanilla, then whisk until smooth.

Now here comes the ooey, gooey messy part. Dip the donuts into the glaze. Place on a cooling rack. Let the glaze dry, then double-dip. Trust me, it makes the glaze thicker and whiter.

Add sprinkles to the tops of each donut.