Washington Apple Pie – DelicioUS!

Ingredients

• 227 unsalted butter, frozen
• 118 ml ice cold water
• 1/2 tbs white vinegar
• 313 g all purpose flour, spooned into measuring cup and leveled
• 1 tsp salt
• 1/4 tsp baking powder
• 750 g mixed apples (Granny Smith and Honeycrisp apples), about 6 medium apples
• 100 granulated sugar
• 50 dark brown sugar
• 1 tsp cinnamon
• 1/4 tsp salt
• 1 tbsp cornstarch
• 1 tsp all purpose flour
• 1 egg
• 1 tbsp water
• ~1 tbsp granulated sugar or large sugar crystals