Melt the butter over medium heat until the butter gets a nutty brown color. Set a side to cool down slightly.
Mix the almond powder, hazelnut, glazing sugar and all-purpose four.
Add the egg whites little by little and mix.
Add the butter and mix.
Smear a thin layer of butter in the molds and sprinkle with flour.
Use two spoons or a piping bag to fill the molds until 3/4 full if you are using financier molds, only half full if you are using standard size muffin molds.