Heat the whipping cream in the microwave for 1 minute 30 seconds and stir well. Cream should be hot to the touch, but not boiling.
Add the chocolate chips to a small mixing bowl and pour the hot cream over the chocolate. Stir well until the chocolate has melted and the mixture is smooth and creamy.
Pour the mixture into the miniature pie crusts filling each one to the top.
Place the pies in the refrigerator for 1 hour to firm up.
Remove the pies from the refrigerator and split the marshmallows evenly between the tops of the pies. Place under the broiler for 2 minutes to toast the marshmallows, keeping a close eye so as not to burn them. Alternately, use a kitchen torch to toast the marshmallows.
Sprinkle the tops with red and green sprinkles and serve immediately.