Versunkener Apfelkuchen (German "Sunken Apple" Cake)

3 medium cooking Golden Delicious, or other cooking, apples
juice from one lemon
1/4 cup brown sugar
2 cups all purpose flour
2 tsp baking powder
2/3 cup butter, softened
3/4 cup granulated sugar
3 large eggs
1/4 cup light cream
2 tsp vanilla extract
zest from one lemon

Peel, core and thinly slice apples. Place in a medium bowl and sprinkle immediately with lemon juice to prevent discolouration. Toss carefully with brown sugar. Set aside.
Butter and flour an 8"x11.5"x2.5" glass baking pan. Whisk together flour and baking powder. Set aside.
In the bowl of an electric mixer, cream together butter and granulated sugar. Add eggs, one at a time. Add cream, vanilla and lemon zest. Add flour mixture in quarters, beating until just smooth. Batter should be the consistency of pound cake batter.
Spread batter evenly into prepared pan. Press apple slices into batter in rows. Drizzle with liquid in the bottom of the bowl. Bake for about 40 minutes at 350F, until a tester comes out clean. Cool completely before serving.