"These sandwich cookies taste rich and buttery and have a lovely lemon filling. The recipe has been in our family since the 1950s, when my mother got it from a French friend in her club. Mom always made them at Christmas, and now my sister and I do the same. -Phyllis Dietz Westland, Michigan..."
INGREDIENTS
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3/4 cup butter, softened
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1/2 cup sugar
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1 egg yolk
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1/2 teaspoon vanilla extract
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2 cups all-purpose flour
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1/4 cup finely chopped walnuts
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FILLING:
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3 tablespoons butter, softened
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4-1/2 teaspoons lemon juice
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3/4 teaspoon grated orange peel
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1-1/2 cups confectioners' sugar
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2 drops yellow food coloring, optional