Classic Madeleines An authentic French madeleines recipe should produce little cakes that are light and quite spongy. Ingredients   * 1 stick (4 ounces) unsalted butter, melted until browned * 2 tsp vanilla extract * 1 and 1/2 tsp lemon zest, finely grated * 1 cup all-purpose flour * 1 and 1/4 tsp baking powder * 1/4 tsp salt * 3 large eggs, at room temperature * 3/4 cup granulated sugar * 1/2 cup confectioners sugar, sifted, optional Instructions: * Cut the butter & place in a heavy saucepan over medium heat. Once the butter melted, reduce heat to low and continue cooking, until the solids sink to the bottom of the pan and turn golden brown, about 10 minutes. * Remove from heat & pour browned butter into a small bowl. Stir the vanilla and lemon zest into the butter, then set aside to cool. * In a mixing bowl, whisk together the flour, baking powder & salt. Set aside until needed. * In the bowl of a stand mixer fitted with the whisk attachment, beat the eggs at medium speed while g...