INGREDIENTS
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2 cups all-purpose flour
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1 tablespoon sugar
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1/2 teaspoon salt
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1 1/2 sticks (6 ounces) cold unsalted butter, cut into small pieces
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1/4 cup ice water
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1/2 cup plus 2 tablespoons all-purpose flour
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1/4 cup walnuts, finely chopped
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1/4 cup granulated sugar
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2 tablespoons dark brown sugar
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1/2 teaspoon salt
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1/8 teaspoon ground cinnamon
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7 tablespoons unsalted butter
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1 cup pure maple syrup, plus more for serving
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1 vanilla bean, split and scraped
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5 Granny Smith apples—peeled, cored and sliced 1/2 inch thick
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1 large egg, beaten with 1 tablespoon of water
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Vanilla ice cream, for serving