Crepe cakes have a longstanding tradition in French patisseries--and are a great reason to try your hand at making crepes. Do not skip the resting step for the batter, as it ensures that the crepes will have the desired texture after cooking. Here, the crepes are stacked and filled with Nutella (or you can substitute your own favorite nougat spread), then sprinkled with powdered sugar and heated under the broiler briefly (watch carefully!), just to warm the Nutella.