Preheat your oven to 350 degrees and spray a doughnut baking pan with Pam baking spray
In a large bowl, whisk together the flour, sugar, baking powder, and salt
In a small bowl, whisk together egg, milk, butter, and vanilla extract
Combine the wet ingredients in with the dry ingredients and mix until well combined
Spoon batter into doughnut pan and bake for 10 minutes
Remove from oven and allow to cool for 6 minutes before removing and placing the doughnuts onto a wire rack
Repeat steps until all batter is used