Cook the apples. In a skillet, sauté the apples with spices, lemon juice, and butter to soften them slightly and infuse them with flavor. After cooking the filling, drain any excess juice to keep the pastry crisp and prevent it from getting soggy. Let the apple filling cool off completely and then keep in the fridge, until you assemble the cake.
Place one puff pastry sheet on a lightly floured work surface and roll it out to a 9-inch circle.
Wipe the bottom of a round 9-inch Pyrex heat-resistant dish with softened butter and line it with the rolled puff pastry dough. Trim the excess dough. Keep it in the fridge to remain cold.
With a dough wheel or a sharp knife, cut strips of dough (3/4 of an inch) and twist them. Keep them in the fridge until you are ready to use them.
Get the baking dish out of the fridge, sprinkle a layer of granola over the pie crust to absorb the saucy apples, and prevent the crust from getting soggy.
Add the apple filling over the granola.
Lay down, in a spiral shape, the twisted strips over the filling, starting from the edges of the round pan, until you cover the entire surface of the pie. When you are done, place the pie back in the freezer for 30 minutes or the fridge for 1 hour.
Brush the surface of the pie with egg wash and place it immediately in the preheated oven for 20-30 minutes, or until the surface is golden brown and the caramelized filling is oozing in between the twisted strips.
Serve it warm with vanilla ice cream and a drizzle of salted Caramel Sauce.