Thanksgiving Piecaken

Ingredients

• 1 (9 inch) pumpkin pie (store bought or your favorite recipe, mine is from the back of the Libby's can!)
• 1 (9 inch) pecan pie (store bought or your favorite recipe)
• Apple Upside-down Cake
• 1 large Granny Smith apples
• 3 tablespoons unsalted butter
• 3 tablespoons dark brown sugar
• 1/2 cup vegetable oil
• 1 cup granulated sugar
• 2 large eggs
• 1/2 cup buttermilk
• 1 teaspoon vanilla extract
• 1 1/2 cups all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1 teaspoon kosher salt
• 1 1/2 teaspoons ground cinnamon
• 1/2 teaspoon ground ginger
• 1/4 teaspoon freshly grated nutmeg
• Cinnamon Buttercream Frosting
• 4 large egg whites (totally clean, no yolks!)
• 1 cup granulated sugar
• 1 lb unsalted butter
• 1 teaspoon kosher salt
• 1 teaspoon vanilla extract
• 2 teaspoons ground cinnamon