Apple Chestnut Tart With Salted Caramel

Name: Apple Chestnut Tart With Salted Caramel
Ingredients: 1 large egg yolk; 1 tablespoon (15 ml) heavy cream; 1/2 teaspoon vanilla extract; 191 g all-purpose flour (6 3/4 ounces; 1 1/2 cups), plus more for sprinkling; 20 g (2 tablespoons) powdered sugar; 13 g (1 tablespoon) light brown sugar; 1/2 teaspoon Diamond Crystal kosher salt; for table salt, use half as much by volume; 1/4 teaspoon ground cinnamon; 8 tablespoons unsalted butter (113 g), cut into 1/2-inch pieces and chilled; Cooking spray; 1 cup (240 ml) heavy cream; 30 g (3 tablespoons) powdered sugar; 1 teaspoon vanilla extract; 1/2 teaspoon ground cinnamon; 1/8 teaspoon Diamond Crystal kosher salt; for table salt, use half as much by volume; 1 (17 1/2-ounce) can chestnut spread (such as Clement Faugier); 57 g (4 tablespoons) unsalted butter; 2 Honeycrisp apples (454 g; 1 pound) , scrubbed, cored, and cut into 1/4-inch-thick slices; 71 g light brown sugar (2 1/2 ounces; 1/3 cup); 1/4 teaspoon Diamond Crystal kosher salt; for table salt, use half as much by volume; 1/8 teaspoon ground nutmeg; Water, as needed; Chopped toasted or candied pecans, for serving; Flaky sea salt (such as Maldon), for serving