Yield: 12 pieces Total Time: 1 hour 30 minutes GATHER THE GOODS 1 1/3 cup (160 g.) all purpose flour 1/2 teaspoon kosher salt 1/8 teaspoon baking soda 1 stick unsalted butter, melted 1/2 cup ( 120 g.) crunchy peanut butter 3/4 (160 g.) cup packed light brown sugar 1 large egg 6 ounces semi-sweet…