Caramel Apple Cake

Name: Caramel Apple Cake
Cook time: 2 h 20 min
Total time: 2 h 20 min
Cuisine: American
Ingredients: 1 1/3 cups firmly packed light brown sugar; 3/4 cup butter, softened; 3 large eggs; 1 teaspoon vanilla extract; 2 cups all-purpose flour; 1 teaspoon baking powder; 1 teaspoon table salt; 1 teaspoon ground cinnamon; 1/2 teaspoon baking soda; 3/4 cup buttermilk; Shortening; 2 pounds McIntosh apples (about 6 apples, 6 to 7 oz. each); 1/2 cup firmly packed light brown sugar; 1 teaspoon cornstarch; 1/4 teaspoon ground cinnamon; Pinch of table salt; 2 tablespoons butter; Apple Brandy-Caramel Sauce