Apple-Caramel handpie

Maybe you'll be exhausted like me when you'll finish this recipe but it totally worth it!

 Ingredients:

For the dough:

2 cups all-purpose flour
1/2 teaspoon salt
1/2 teaspoon baking powder
1 cup (2 sticks) cold unsalted butter, cut into cubes
1/2 cup cold sour cream

For the filling:
2 cups small diced (peeled) Granny Smith apples (See Kelly's Notes)
2 teaspoons fresh lemon juice
1/2 teaspoon cinnamon
1/4 cup sugar
2 teaspoons all-purpose flour
8 store-bought soft caramels, roughly chopped
Large flake sea salt (See Kelly's Notes)
Egg wash (1 egg lightly whisked with 1 Tablespoon water)
Crystal sanding sugar (optional)

Whisk together the flour, salt and baking powder in a large bowl.Add the cubed butter to the bowl and use your fingers to work the butter into the flour until the mixture is the consistency of wet sand.Stir in the sour cream (the dough will be very wet), and then turn the dough out onto a well-floured work surface.Knead the dough a few times until it comes together, adding more flour, 1 teaspoon at a time, if the dough is too sticky to handle. Roll the dough into an 8x10-inch rectangle and dust both sides with flour before folding it into thirds as if you were folding a letter.Rotate the dough 90º and roll it out again into an 8x10-inch rectangle. Fold the dough again into thirds then wrap it securely in plastic wrap and refrigerate it for at least 30 minutes while you make the filling.

Place the dough circles on a Silpat or parchment paper-lined cookie sheet. Spoon a small portion of the apple filling into the center of each circle, leaving enough of a border around the filling. Top the apple filling with a portion of the chopped caramels and a pinch of sea salt. Place a second dough circle atop each filled circle then use a fork to crimp the edges together, sealing each pie.Bake the pies for about 15 minutes, or until they're golden brown.