For the donuts

1. Preheat oven to 350 °F and grease a donut pan with cooking spray, set aside.
2. Combine dry ingredients in a medium bowl (flour, sugar, baking powder, and salt), whisk until combined.
3. Combine all wet ingredients in a seperate small bowl (eggs, butter, milk, and vanilla extract), whisk until smooth.
4. Pour liquid ingredients into dry ingredients and whisk until all dry ingredients are mixed in. Do not overmix.
5. Transfer batter to a Ziploc bag with a 1/2 inch corner cut off. Pipe the batter into the donut pan until each donut mold is 3/4 full. Use a spoon to smooth the batter out if necessary. Bake for 8-10 minutes. Donuts are done when they spring back to the touch. Let donuts rest in the pan for 5 minutes while they cool. Prepare the frosting while donuts are in the oven.

For the strawberry frosting

1. Blend strawberries with water until completely pulverized and smooth. Transfer to a small bowl and add confectioners sugar. Whisk until smooth and fully mixed in. Frosting should be relatively creamy and slowly drizzle off a spoon. Add additional confectioners sugar to thicken, or a teaspoon of water at a time to thin out.
2. Remove warm donuts from the pan and dip the top half upside down into the frosting, 2-3 times, until desired coating is reached. Set on a wire rack and immediatly sprinkle with sprinkles to ensure they adhere. Let frosting harden for 5-10 minutes before serving.