Sour Cream Peach Pie - SippitySup

Ingredients

• 1 ¼ cup plus 3 tablespoons all-purpose flour (divided plus more for dusting)
• 4 tablespoons granulated sugar (divided)
• 1/8 teaspoon kosher salt (plus more as needed)
• 12 tablespoons cold unsalted butter (cut into pieces, divided)
• 1 large egg yolk (lightly beaten)
• 1 tablespoon ice water (plus more as needed)
• ¼ cup light brown sugar (lightly packed)
• ¼ teaspoon baking powder
• 3 ripe yellow peaches (halved and pitted)
• 6 tablespoons sour cream (divided)