Delicious cake from Tuscany!

INGREDIENTS:
4 eggs, separated, 2 lbs Golden Delicious apples, juice of 1 small lemon, 1/4 cup Calvados, 1 cup sugar, 12 Tbsp butter, melted, 1 cup all-purpose flour, sifted, 2 Tbsp baking powder, 1/4 tsp ground nutmeg, 1/4 tsp ground ginger, 1/2 tsp ground cinnamon
To coat the pan:
– 1 Tbsp butter
– 1 Tbsp sugar
Preheat the oven to 400 degrees F. Place sliced apples in a medium bowl; add lemon juice and Calvados and toss well. In a medium glass or metal bowl, beat egg whites on high until stiff peaks form, about 5-6 minutes.In another medium bowl, combine butter, sugar, and egg yolks. Mix until well combined. Add sifted flour, baking powder, and spices, and mix until well combined.
Fold the beaten egg whites into the batter, then fold in the apple slices.

Coat a 9-10 -inch spring form pan with cooking spray. Add 1 Tbsp of butter in small pieces to the bottom of the pan and sprinkle with 1 Tbsp sugar. Pour the batter on top, and smooth it out with a spatula.

Bake for 10 min at 400 degrees F. Then bake for 60 min at 325 degrees F or until a knife inserted comes out clean and the top is golden brown and puffed up.