Preheat the oven to 350 degrees Fahrenheit.
Grease two, 6 cavity donut pans (this recipe makes 8, so only need to grease 8). If you only have one pan you can just do this in two batches! Even if your pan says non-stick, grease it anyway! Whisk together all wet ingredients in a bowl until smooth.
Whisk in the dry ingredients, making sure to spoon and level the flour.
Whisk until smooth. Use a 1/4 measuring cup to scoop into the prepared pan.
Bake for 8-11 minutes, or until a toothpick comes out clean. Mine are usually perfect at 9 1/2 minutes. These can over bake really easily, so keep a close eye!
Remove from the oven and let cool in the pan for 10 minutes, then flip onto a cooling rack. They should pop right out, but if you have any issues, take a thin knife and carefully run it around the donut, then flip and you should be good.
Let cool.
Once cool, add all ingredients for the frosting to a bowl and microwave in 30 second intervals, stirring between each interval until full melted.
Dip the top of each donut in the frosting and top with sprinkles. Enjoy!