Preheat oven to 350F. Beat butter and sugar in large bowl with electric mixer on medium speed until light and fluffy. Blend in egg.
Add flour, baking soda and salt; mix well. Stir in remaining ingredients.
Let stand 15 minutes.
Drop rounded tablespoonfuls of dough, 1-1/2 inches apart, onto ungreased baking sheets.
Bake 10 to 12 minutes or until golden brown. Cool 2 to 3 minutes; transfer to wire racks. Cool completely. Store in tightly covered container at room temperature.