Ferrero Rocher Cake Ingredients Cake Layers 7 large eggs, room temperature 1/2 cups sugar 2 cups ground hazelnuts 3 Tbsp all purpose flour 3 Tbsp cocoa powder 3 tsp baking powder Frosting 300 grams unsalted butter, room temperature 2 1/4 cups chopped chocolate or chocolate chips 1/2 cup Nutella Also 1.5 cup wafers, crushed