1 2/3 c. flour
1/3 c. powdered sugar
1 c. butter, softened
1 tsp. vanilla

FILLING:

1 egg, beaten
2/3 c. sugar
1 tsp. cornstarch
1/4 tsp. salt
3 tbsp. lemon juice
1 tbsp. butter

In medium bowl, combine first 4 ingredients; blend well. Chill dough. Heat oven to 350 degrees. Shape dough into 1" balls. Place 2" apart on ungreased cookie sheet. With thumb or forefinger, make imprint in center of each cookie. Bake at 350 degrees for 8 to 10 minutes or until lightly browned. Immediately remove from cookie sheet, cool.

In medium saucepan, combine filling ingredients; cook over low heat, stirring constantly until smooth and thickened. Cool. Top each cookie with about 1/4 teaspoon of filling; sprinkle with powdered sugar. Makes 36 cookies.