These fluffy, baked donuts are delicious all on their own, but when you dunk them in melted butter and roll them through cinnamon and sugar they are just plain amazing.
Preheat oven to 325 degrees. Lightly spray a donut pan with cooking spray.
In a large bowl, mix together the flour, sugar, baking powder, nutmeg, cinnamon, and salt.
In a small bowl, beat together the buttermilk, eggs, vanilla, and melted butter until well combined.
Stir the wet ingredients into the dry ingredients and mix until well combined.
Fill your donut pan 3/4 full and bake for 8 to 10 minutes or until the donuts spring back when touched. Allow to cool slightly before removing from the pan.
To make the topping, mix together the sugars and cinnamon in a small bowl.
Dunk each donut quickly into the melted butter to completely coat (but do not soak the donut in the butter) and then swirl around in the cinnamon sugar to coat.