HEAT oven to 375°F.
MIX first 5 ingredients in large bowl. Beat butter and 1-1/2 cups sugar in large bowl with mixer until light and fluffy. Blend in eggs. Gradually beat in flour mixture until well blended. Shape into 1-inch balls.
MIX remaining sugar and cinnamon. Roll balls in cinnamon sugar. Place, 2 inches apart, on baking sheets.
BAKE 10 to 12 min. or until lightly browned. Cool on baking sheets 1 min. Remove to wire racks; cool completely.