8 oz bittersweet chocolate, chopped, plus chocolate shavings (optional)
40 large marshmallows
2 ¼ cups heavy cream, divided
In large bowl, combine chopped chocolate, marshmallows and 1/2 cup heavy cream. Microwave 2 minutes on high, or until marshmallows are melted. Let mixture cool 1 hour.
Using mixer, whip 1 3/4 cups heavy cream until soft peaks form.
Reserve and refrigerate 1/2 cup whipped cream for topping.
In cooled chocolate mixture, fold in 2 cups whipped cream until combined.
Add remaining whipped cream and mix until combined.
Spoon mousse into ramekins or small cups. Refrigerate at least 2 hours.
To serve, top with 1/2 cup reserved whipped cream and sprinkle with shaved chocolate and sprinkles if desired.