How to make
Whip the eggs in a deep bowl with the crystal sugar. Add the oil and yoghurt and beat very well.
Finally, add the flour, baking powder and cinnamon and stir until you get a smooth mixture.
Mix in the jam. Oil and flour a tray and pour the mixture inside.
Sprinkle with the ground walnuts and bake in a preheated 390°F (200 °C) oven for about 40-45 min. Cool and sprinkle with powdered sugar.
