Heat oven to 350°F. Make 16 cookies as directed on container. Cool completely, about 15 minutes.
Cut eight 12x9-inch pieces of plastic wrap or foil. Place chocolate chips in small bowl.
For each sandwich, spoon 1/4 cup ice cream onto bottom of 1 cookie. Top with second cookie, bottom side down; press together gently. Gently roll edge of sandwich in chocolate chips. Quickly wrap each sandwich in plastic wrap. Freeze until firm, about 3 hours. Let stand 5 minutes before serving.