Blood Orange Tart

Name: Blood Orange Tart
Ingredients: 1 cup all-purpose flour, plus more for dusting; 1/4 cup Granulated Sugar; 2 tbsp Granulated Sugar; 1/4 tsp Baking Powder; 1/4 tsp Salt; 1 stick Unsalted Butter; 1 tbsp Unsalted Butter, the stick cut into 1/2-inch pieces and chilled; 3 tbsp Ice Water; 10 x blood oranges,(about 5 ounces each); 1 x large egg yolk mixed with 2 tablespoons of water; Caramel Sauce(salted),for serving; 1 cup Granulated Sugar,for caramel; 6 tbsp Butter (preferably fancy salted butter but you can also do regular unsalted and add a generous pinch of sea salt),for caramel; 1/2 cup Heavy Cream,for caramel