How to Make Lady Fingers

• Preheat oven to 400°F (205 °C).
• Line two baking sheets with parchment paper.
• Fit a large piping bag with a round piping tip.
• Sift flour, corn starch, and a pinch of salt. Set aside.  
• Place egg whites in the bowl of a stand mixer, beat for 1-2 minutes, and add three tablespoons of granulated sugar. Beat until stiff and glossy. 
• In another mixing bowl, beat egg yolks and remaining sugar until pale in color.
• Fold half the egg whites into the egg yolk mixture.
• Fold in the flour, and then add the remaining egg whites. Be very gentle when folding ingredients together. Stir until ladyfinger butter is completely combined, but do not overdo it. 
• Transfer the mixture into a piping bag. Pipe on prepared baking sheet 4” lines, leaving 2” of space between sponge cookies. 
• Bake the ladyfingers for 10-15 minutes or until the edges are golden brown.