POUR milk into 1-quart microwave-safe bowl. Microwave on HIGH 1 to 1 1/2 minutes or until hot but not boiling. Whisk until foamy.
POUR chocolate sundae syrup into standard-size coffee cup. Microwave on HIGH 20 seconds to warm syrup. Stir in hot coffee.
ADD steamed milk to brim of cup. Top with swirl of whipped cream. Drizzle with additional chocolate sundae syrup. Garnish with sprinkles. Serve immediately.