Add chocolate chips, milk, and cream to a medium pot over med low heat.
Whisk continually so it does not burn and bring to a simmer.
Once all the chocolate is melted and combined, remove from heat.
Stir in vanilla and 3 drops of blue food coloring.
Pour into mugs and serve immediately.
I top mine with whipped cream, snowflake pretzels, mini marshmallows, and blue sprinkles.
Enjoy this colorful Christmas treat!