1. Lightly dust your work surface with flour and roll the dough out into an 11-inch round. Spray a 9-inch pie pan with nonstick cooking spray and transfer the dough to the prepared pan. Using kitchen scissors, trim the edge of the dough, leaving a ¾-inch overhang. Crimp or flute the side of the dough and refrigerate or freeze for 30 minutes while preparing the filling and streusel topping.
2. In a large sauté pan, melt 1 tablespoon of the butter. Add the sliced apples and simmer on low heat for 8 to 10 minutes until the apples are soft. Turn off the heat and add the spices, tossing the apples gently to coat. Transfer the apples to a bowl to cool.
3. Preheat the oven to 350 degrees. In a sauté pan, melt the ½ cup butter. Stir in the flour to form a paste. Add the water and both kinds of sugar. Bring to a boil, stirring constantly, then reduce the heat and simmer for several minutes to thicken.
4. Combine all the ingredients for the streusel either in a food processor or in a mixing bowl. If using a food processor, pulse to combine. If using a mixing bowl, just use your fingers to work the streusel ingredients together.
5. Place the cooled apples into the pastry-lined pie pan. Pour the sugar and butter mixture over the apples being careful not to let it run over the side of the pan. If necessary, reheat the sugar and butter mixture on low to loosen it up. I like to let the filling settle for a few minutes before moving on to the next step.
6. Combine the egg and cream. Brush the crust side lightly with the egg wash.
7. Place the pie on a baking sheet. Bake in the preheated oven for 20 minutes. After 20 minutes, top the pie evenly with the streusel mixture.
8. Bake for an additional 40 to 50 minutes or until the streusel is nicely browned. The pie filling may bubble slightly over the rim, but that’s okay! The overflow will land on the baking sheet… good thing you’re so well-prepared!
9. Remove the pie from the oven and let cool for 1 hour on a wire rack.

How to Make the Chai Spiced Whipped Cream Topping

1. While your pie cools, you can make the chai spiced whipped cream. Pour the cream into the chilled bowl of a stand mixer. Using the whip attachment, whip the cream on medium-high speed until soft peaks form. Reduce the speed to medium and slowly add the confectioners’ sugar and chai spices. Whip until medium peaks form. Serve generously with your apple pie!