The Family Kitchen: Caramelized Apple Cake

Ingredients

1 1/2 cups flour

1 1/2 teaspoons baking powder

1/2 teaspoon salt

1/2 cup (1 stick) plus 5 tablespoons unsalted butter, softened

2/3 cup granulated sugar

2 eggs

1 teaspoon vanilla extract

1/2 cup sour cream

1/2 cup packed dark brown sugar

2 large Granny Smith apples, peeled, cored, cut into 1/4-inch slices