1 1/2 c egg whites from 10-11 eggs
3/4 c gluten free flour
1/4 c cornstarch
3/4 c powdered sugar
3/4 c + 2 T granulated sugar
1/4 t salt
1 1/2 t cream of tartar
1 T vanilla
1/4 t almond extract
Separate egg whites and allow them to sit at room temperature for 30 minutes.
Preheat oven to 350. In a food processor bowl, blend flour, cornstarch, and powdered sugar together until smooth, about 30 seconds. (I use my immersion blender)
Add the granulated sugar to a bowl and blend 5-7 times, just to make it finer. Set aside.
In a bowl of a stand mixer using whisk attachment, beat egg whites on high speed until it starts to foam. Then add salt and cream of tartar.
Add the vanilla and almost and continue whipping on high speed.
With the mixer running on high, slowly add the granulated sugar, 1 T at a time, until all the sugar is added and the mixture is glossy with soft peaks.
Using a spatula, slowly fold in the flour mixture, 1/3 at a time. Do this carefully and slow so the egg whites don't deflate. Scoop into an ungreased pan.
Bake for 35-40 minutes, until lightly golden. Remove oven from cake and immediately flip upside down.