Put 100 grams of butter in a heavy bottomed pan, cook over medium-high heat until browned and nutty smelling. Pour into a bowl and let cool.
Mix well sugar and cinnamon.
Beat 75 grams of butter, sugar and salt.
Beat in the egg until creamed together.
In a separated bowl, combine the flour and baking powder.
Add the dry ingredients to the butter mixture.
Alternate with the milk. Beat well after each addition.
And become the creamy batter.
Preheat the doughnut maker and lightly grease both under and upper mold.
Put the batter in every mold.
One by one, dip each doughnut in the melted butter.
Then roll it in the cinnamon sugar.