4 - 5 Gala apples, cored and cut into ⅛ inch / 3 mm thick slices
½ teaspoon ground cinnamon
Instructions
Make the pâte sucrée
In a food processor, pulse together the flour, salt and sugar until combined.
Add the cubed butter, a few at a time (I do it in 3 batches), and pulse until the dough looks like coarse crumbs.
In a small bowl, mix the egg yolk together with the ice water and slowly add it to the flour mixture. Pulse until the dough comes together.
Place the dough on a lightly floured surface and roll into a ball. Then shape it into a flat disk. Wrap the disk in plastic wrap and refrigerate for 30 minutes.
Prepare the filling & topping
In a small bowl, stir the dulce de leche a few times to make it creamier and easier to spread. Set aside.
Cut the cored apples in half. Place the cut side down and thinly slice them (about ⅛ inch / 3 mm thick). Place them in a bowl and cover with plastic wrap to prevent browning. Set aside 3-4 really thin slices in another bowl with a few drops of water.
Preheat oven to 392 °F / 200 °C.
Roll out the dough and fit into the tart pan.
Spread the dulce de leche on the bottom of the crust.
Starting from the edge of the tart, place overlapping apple slices vertically, cut side down. Each slice should overlap the previous one halfway.
Continue arranging the apple slices tightly into a spiral until you reach the center of the tart.
Roll the 3-4 very thin apple slices together into a spiral shape. Place it in the center of the tart.
Sprinkle the entire tart with cinnamon.
Bake for 35 minutes or until it's golden brown.
Allow it to cool for at least 1 ½ hours before slicing.