To prepare a taillaule neuchatel desserts recipe, first preheat oven to 350?F (180?C) and prepare your oven rack to the lowest setting. Line the bottom of an 8x8x2-inch baking pan with foil and set aside. In the bowl of your stand mixer fitted with the paddle attachment, beat the egg whites on medium-high speed until stiff peaks form. Gradually add the sugar, beating after each addition until the mixture is light and fluffy, about 2 minutes. Add the vanilla and beat until combined. Pour the batter into the prepared pan and bake in the preheated oven for 20 minutes, or until set. Remove the pan from the oven and allow the cake to cool completely before cutting into squares.