A New Take On Apple Pie - Diamond Nuts

Ingredients

• 2 cups all-purpose flour
• ¼ cup granulated sugar
• ½ teaspoon baking powder
• ¾ teaspoon kosher salt
• 2 sticks (1 cup) cold unsalted butter, cubed
• ¼ cup cold water
• 5 large apples
• 4 tablespoons unsalted butter
• ½ cup brown sugar
• 1 tablespoon dark rum
• 2 teaspoons ground cinnamon
• Pinch kosher salt
• 1 cup heavy cream
• ½ cup sour cream (full-fat)
• ¾ cup granulated sugar
• 1 teaspoon vanilla bean paste
• 4 large egg yolks
• ¼ cup all-purpose flour, sifted
• ½ cup all-purpose flour
• 1/3 cup brown sugar
• 2/3 cup chopped hazelnuts
• ¼ cup butter, softened
• 1 cup heavy whipping cream
• ¼ cup, plus 1 tablespoon powdered sugar, sifted
• ½ teaspoon vanilla extract
• ¼ teaspoon ground cinnamon
• 1 tablespoon whiskey