1Heat oven to 350º. Mix Bisquick mix, brown sugar and cocoa in large bowl. Stir in butter and eggs until soft dough forms. Stir in chocolate chips.
2Shape dough into 1-inch balls. Place about 2 inches apart on ungreased cookie sheet. Bake 8 to 10 minutes or until set. Cool 1 minute; remove from cookie sheet to wire rack. Cool completely, about 20 minutes.
3Melt white baking chips and shortening in small microwavable bowl uncovered on Medium-High (70%) 1 minute; stir. Continue to microwave 10 seconds at a time, stirring after each time, until chips can be stirred smooth. Spoon into resealable plastic food-storage bag. Cut very small tip from corner of bag. Drizzle over cookies.