Preheat oven to 350 degrees.
Separate egg whites and egg yolks into 2 two medium size bowls. Use a hand or stand mixer to beat egg whites with 1 TBSP sugar until stiff peaks form, set aside. Beat egg yolks with vanilla and the rest of the sugar till mixture is thick and creamy.
Fold in the egg whites into the egg yolk mixture, do not use beater instead mix by hand with a rubber spatula. In a medium bowl sift together all flours, baking powder and salt. Last fold the flours with the egg mixture using the rubber spatula.
Since I'm using ladyfingers for tiramisu the last step is much simpler. I made 3 large cookies to use as layers in the tiramisu. To do this line a cookie sheet with parchment paper, trace the bottom of a 6 inch diameter baking dish or 8 inch round baking dish onto the parchment paper. Pour about 3/4 cup batter into the center of the circle on the parchment paper, leave about 3/4 inch border.
Bake in preheated oven for 10-12 minutes, till ladyfingers are lightly browned. Remove cookie sheet from oven and allow to cool for about 10 minutes before removing from pan & place parchment paper with the ladyfingers onto the counter. These cookies are very delicate, so I feel like they might fall apart if one cools them on a wire rack. Repeat the above instructions two more times. If your cookie sheet is a bigger size one could make two big ladyfingers at the same time.
Ladyfingers alone are delicious. If one wishes to eat them as an afternoon treat with tea and make it as an actual ladyfinger. Place parchment paper onto a cookie sheet. Simply transfer the batter into a pastry bag or a plastic bag with the end snipped off. Pipe the batter onto the parchment paper in the form of ladyfingers. Bake at 350 for 8 minutes, cool for 10 minutes before transferring to counter, sprinkle with powdered sugar, allow ladyfingers to cool completely before storing in a container with an airtight lid.