Add eggs and sugar to a bowl and whip together.
Warm the mixture using a double boiler.
Sift cake flour and almond flour into the mixture and stir gently.
Add melted butter and mix evenly.
Crush almonds finely and add them to the batter.
Line a baking pan with parchment paper and pour in the batter.
Bake in a preheated oven at 180°C (356°F) for 30-35 minutes.
Let cool and cut into serving-size pieces.