INGREDIENTS
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Nonstick cooking spray
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1 1/3 cup crumbled vanilla wafers
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2 tablespoons sugar
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5 tablespoons butter
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1 cup sugar
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2 eggs
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1/2 teaspoon lemon zest
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1 lemon
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1/2 teaspoon vanilla extract
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2 tablespoons flour
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Confectioners' sugar, for garnish