- 2 cups flour
 - 1 cup sugar
 - 2 teaspoons baking powder
 - 1 teaspoon ground cinnamon
 - 1/2 teaspoon ground cardamom
 - 2 teaspoons lemon zest
 - 2 teaspoons ground ginger
 - 1 egg yolk
 - 2 cups pumpkin puree
 - 3/4 cup vegetable oil
 - 3 egg whites, beaten
 - 1 apple – peeled, cored, and sliced
 - 2 teaspoons white sugar
 - 2 teaspoons ground cinnamon
 
- Preheat oven to 300 degrees F (150 degrees C). Lightly grease a 9 inch round cake pan.
 - Mix together the flour, sugar, baking powder, cinnamon, cardamom, lemon zest, and ginger in a large bowl. Add the egg yolk, pumpkin puree, and oil; mix until smooth. Gently stir the egg whites into the batter; pour into prepared pan. Arrange the apple slices atop the batter; sprinkle with sugar and cinnamon.
 - Bake in preheated oven until a knife inserted into the center of the cake comes out clean, about 40 minutes. Allow to cool before serving.