"A shortbread crust makes easy work of these pretty little tarts. Simply roll the dough into balls to press into mini muffin cups -- no finicky pastry to roll and cut. Plus, the buttery crust pairs wonderfully with the citrusy zing of the filling...."
INGREDIENTS
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2/3 cup unsalted butter
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1/2 cup icing sugar
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1/2 tsp vanilla
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1 pinch salt
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1-1/3 cups all-purpose flour
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2 eggs
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2 egg yolks
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1/2 cup granulated sugar
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2 tsp lemon zest
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5 tbsp lemon juice
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1/3 cup pasteurized egg whites
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1/2 cup granulated sugar