Preheat the oven at 175 degrees Celsius.
In a bowl mix the almond flour, flour, cardamom powder, salt and sugar.
In a bowl mix together the almond paste and eggs.
Add the flour mix with the egg mix and stir together.
Melt the butter in a casserole and mix in the batter.
Butter a baking form and pour the batter in the form.
Place in the middle of the oven for 20 minutes. Take it out and let it cool down.
Whip the cream and the vanilla sugar to a hard foam.
Spread evenly over the cake.
Be creative with the decoration. Good luck!