Preheat the oven to 425°F.
Melt the butter in a saucepan.
Stir in 6 tablespoons of flour to form a paste.
Add the sugars, cinnamon, and water. Bring to a boil.
Lower the heat and simmer the caramel sauce for 5 minutes.
Meanwhile, place the bottom crust in your baking dish. Fill it with the apple slices, mounding them slightly.
Top the apples with half of the caramel sauce.
Cover the filled pie with the top crust using your preferred technique.
Slowly pour the remaining caramel over the crust so it doesn't run off. Top with a few shakes of cinnamon.
Bake for 15 minutes, then reduce to 350°F and continue baking for 35 to 45 minutes or until golden.
Let the pie rest for at least 4 hours before slicing. Enjoy!