Salted Caramel Apple Pie Bars

Name: Salted Caramel Apple Pie Bars
Prep time: 40 min
Cook time: 1 h 5 min
Total time: 1 h 45 min
Cuisine: American
Ingredients: 3/4 cup granulated sugar; 1/4 cup water; 1 cup heavy cream; 2 tablespoons unsalted butter; 3/4 teaspoon kosher salt; 3 pounds Granny Smith, Honeycrisp, or Pink Lady apples (about 6 large or 7 medium), or a combination; 1/4 cup granulated sugar; 1 teaspoon vanilla extract; 1 teaspoon ground cinnamon; 1/2 teaspoon ground nutmeg; 1/4 teaspoon kosher salt; Cooking spray; 2 1/2 sticks (20 tablespoons) cold unsalted butter; 1 large egg; 3 cups all-purpose flour; 1/2 cup granulated sugar; 1/2 cup packed light or dark brown sugar; 1/2 teaspoon baking powder; 1/2 teaspoon kosher salt