Lemon cookie sandwiches

---------- Recipe via Meal-Master (tm) v8.05
  
       Title: Lemon Cookie Sandwiches
  Categories: Cookies
       Yield: 48 servings
  
     1/2 c  Sugar
     1/2 c  Butter or margarine;
            -softened
       2    Eggs; separated
       1 tb Water
       1 ts Vanilla
   1 1/2 c  All-purpose flour
     1/2 ts Salt
     1/4 ts Baking soda
     2/3 c  Nuts; finely chopped
            Lemon filling:
       1 c  Powdered sugar
       2 ts Butter or margarine;
            -softened
       1 ts Lemon peel; grated
   1 1/2 tb Lemon juice
  
   Recipe by: CHRISTMAS COOKBOOK
       Mix sugar, margarine, yolks, water and vanilla. Stir in flour, salt and
   soda. Divide dough into halves. Shape each half into roll 7x1-1/2". Wrap
   and refrigerate at least 4 hours. Heat oven to 400 degrees. Cut rolls into
   1/8" slices. Place 1" apart on ungreased cookie sheet. Beat egg whites
   slightly; stir in nuts. Spoon 1/2 teaspoon nut mixture onto half of the
   slices, leaving remaining slices plain. Bake until edges begin to brown,
   about 6 min. Immediately remove from cookie sheet; cool. Put cookies
   together in pairs with Lemon Filling: (beat all ingredients until smooth).
   Place nut-topped cookies on top. About 4 dozen cookies.
  
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