INGREDIENTS
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1 1/2 cups all-purpose flour
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1/4 cup granulated sugar
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1/2 teaspoon baking powder
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1/2 teaspoon finely grated lemon zest
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7 tablespoons unsalted butter, softened
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1 large egg
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1 large egg yolk
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1/4 cup plus 2 tablespoons peach preserves
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3 to 4 firm white peaches, cut into 1/2-inch wedges
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Confectioners' sugar, for dusting