Drunken Apple Cake (Kuchen Borracho)

Recipe by Gaitri Pagrach-Chandra (from book "Warm bread and honey cake").


For the filling


1 1/2 pounds tart apples (about 6 medium-sized apples)
Generous 1/3 cup granulated sugar
1/2 cup heavy cream



For the cake

2 cups all-purpose flour, plus more for the pan
2 1/2 teaspoons baking powder
1/4 teaspoon salt
11 tablespoons unsalted butter, at room temperature, plus more for the pan