Canadian Butter Tarts - Once Upon a Chef

Ingredients

• 1⅔ cups all-purpose flour, (spooned into measuring cup and leveled-off)
• ½ teaspoon salt
• 2 tablespoons granulated sugar
• 12 tablespoons (1½ sticks) very cold unsalted butter, cut into 12 pieces
• ¼ cup very cold water
• ¾ cup (packed) dark brown sugar
• ¼ cup maple syrup
• 4 tablespoons unsalted butter, melted and cooled slightly
• 1 large egg
• 1 teaspoon apple cider vinegar
• 1 teaspoon vanilla extract
• ½ cup ­chopped pecans, ((optional but highly recommended))
• 3 tablespoons raisins ((optional))