1teaspoonvanilla extract(or less if you want less vanilla flavour)
pink gel colouring(to desired colour (optional))
Preheat oven to 425 degrees Fahrenheit. Spray 6-unit donut pan with baking spray. Stir together flour, sugar, baking powder, and salt.
To flour mixture, add milk, egg, melted butter, and vanilla extract. Using a hand mixer, blend for a minute or two.
Distribute donut batter in greased pan. Bake on middle rack of oven for 7 to 8 minutes or until toothpick inserted comes out clean. Carefully remove from oven and let rest 10 to 15 minutes before removing donuts from pan. Let cool completely on wire rack before icing.
Add icing sugar to bowl and add vanilla and water (a teaspoon or so at a time until you've reached your desired consistency...a little water goes a long way) and gel food colouring (if using). Whisk or stir with a spoon until everything is combined and smooth. Note: If using the gel food colouring, I suggest using a tiny amount on the tip of a toothpick to swirl into icing sugar mixture (again, a little goes a long way). If you are using a LIQUID food colouring, you'll want to add a little less water so you don't thin out the glaze too much.
Invert donuts into glaze and distribute sprinkles over top. Place on wire rack and let glaze set for 10 minutes or so. Enjoy!