Place egg yolk in a medium bowl and lightly beat. Set aside for a moment.
In a medium saucepan, heat milk, heavy cream, sugar, and maple syrup over medium heat until steaming (do not boil)
Slowly drizzle 1/2 cup hot milk mixture into egg yolk, whisking constantly until smooth. Add egg yolk mixture to saucepan and whisk occasionally over medium heat until creamer is steaming, stirring occasionally.
Remove creamer from heat and whisk in vanilla and nutmeg. Allow creamer to cool then chill in refrigerator before using. Enjoy!
Notes
Storing InstructionsStore coffee creamer in refrigerator up to 1 week.