1. In large bowl, combine all ingredients except confectioners' sugar. With hands, mix until thoroughly blended. Refrigerate 30 minutes.
2. Meanwhile, preheat oven to 375°F. Using hands, roll dough into balls 1 1/4 inches in diameter. Place, 1 inch apart, on ungreased cookie sheets.
3. Bake 15 to 20 minutes, or until cookies are set but not brown. Let stand 1 minute before removing from cookie sheets. Remove to wire rack; cool slightly.
4. Roll in confectioners' sugar while still warm; cool completely. Just before serving, reroll in sugar.