Beat butter at medium speed with an electric mixer until creamy. Add powdered sugar, beating until smooth. Add extracts, baking powder and salt; beat again until smooth. Gradually add flour, beating at low speed until blended. Stir in chocolate chips.
Shape dough into 3 (10-inch) logs; wrap logs separately in wax paper, and chill 4 hours.
Preheat oven to 350. Cut each log into 15 slices, and place on baking sheet. Bake for 10-12 minutes or until edges are golden.
Bake, Assemble
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