Instructions: Sift first 4 ingredients together; set aside. Cream butter & vanilla until butter softens. Add sugar gradually beating until fluffy. Add egg yolks, one at a time, beating well after each. Add dry ingredients in fourths to creamed mixture, beating just until blended. Form dough into balls about 1" in diameter. Roll in additional sugar. Place about 2" apart on ungreased baking sheets. Bake at 350 degrees for about 10 min. or until golden.

Makes 10 dozen cookies.

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