the flour and cornstarch, and mix thoroughly. set aside.
spread the apples in one layer on the parchment paper and sprinkle with cinnamon. in a slow stream, pour the egg mixture over the apples to cover, making sure it is distributed evenly.
bake in the oven until the top is golden brown and the cake springs back up when touched, about 30 minutes. remove from the oven and let cool for 10 minutes.
using a knife, loosen all sides of the cake from the baking pan. place a piece of parchment paper and a baking sheet on top, and flip it over quickly. peel off the parchment paper that you used for baking 