Preheat oven to 350° F.

Crumble cookie dough into medium bowl. Add nuts; mix thoroughly. Drop by 1/4-cup measure onto ungreased baking sheets.

Bake for 14 to 16 minutes or until golden brown. Cool on baking sheets for 1 minute; remove to wire racks to cool completely.

Microwave morsels in heavy-duty plastic bag on HIGH (100%) power (MEDIUM-HIGH [70%] for white morsels) for 30 seconds; knead until smooth. Microwave at additional 10- to 20-second intervals, kneading until smooth. Cut tiny corner from bag; drizzle over each cookie.