Maple Pecan Pie | America's Test Kitchen

Ingredients

• 1 1/4 cups unbleached all-purpose flour , plus extra for dough and rolling surface
• 2 tablespoons confectioners' sugar
• 1/2 teaspoon table salt
• 8 tablespoons unsalted butter , chilled, cut into 1/4 -inch pieces
• 2 tablespoons vegetable shortening , frozen, cut into small pieces
• 1 large egg white , chilled, thoroughly mixed with ice water (about 2 tablespoons) to equal 1/4 cup
• 1 large egg yolk , beaten with 1/8 teaspoon water
• 4 tablespoons unsalted butter , cut into 1-inch pieces
• 1/2 cup granulated sugar
• 1/4 teaspoon table salt
• 3 large eggs
• 1 cup maple syrup , pure, preferably Grade B or Grade A dark amber
• 1 1/2 cups whole pecans (6 ounces/170 grams), toasted and chopped into small pieces