For the walnut cupcakes, beat eggs with sugar until foamy and mix the dry ingredients.
Stir the oil and sour cream into the fluffy eggs.
Stir the dry ingredients into the egg and sour cream mixture and pour into the cupcake molds.
Bake the walnut cupcakes at 180°C degrees for 20 minutes.
After the cupcakes have cooled, garnish with shaved chocolate or a topping.