Preheat the oven at 175 degrees Celsius.
Butter a baking form and sprinkle the bread crumbles evenly in the form.
Melt the butter and let it cool down for a few minutes.
Whip the eggs and the sugar white and fluffy. Add the sour cream and the melted butter.
Add the flour, gingerbread spices and the baking powder and mix well.
Pour the batter in the baking form and place in the lower part of the oven for 30 minutes. Take out the cake and let it cool down.
Whip the whip cream to a hard foam. Place it evenly on the cake and the edges.
Decorate the cake with gingerbread cookies on the edges and a nice shape of cinnamon powder on top.