Apple Pie Recipe with Video (caramel apple filling + easy pie crust)

Name: Apple Pie Recipe with Video (caramel apple filling + easy pie crust)
Cuisine: American
Ingredients: 240 g cake flour ((1¾ cups + 1 tbsp)); 25 g granulated sugar ((2 tbsps)); 170 g unsalted butter ((1½ sticks of butter; cold and cut into small cubes.)); 30 g egg ((About ⅗ of a large egg)); 2 giant apples; 1 tbsp cornstarch; 2 tbsps cold water; 50 g granulated sugar; 30 g unsalted butter; 1 g cinnamon powder ((½ tsp; Or add more to your taste.)); 1 egg yolk; 1 tbsp milk ((Or water)); 7 leaves ((for decoration))