Heat milk in a small pot over medium-high heat. Add tea bag (make sure to keep tag away from the burner!). Once milk begins to steam and bubbles start to form, turn heat off.
Let tea bag steep for 2 minutes. Press tea bag between a spoon and the side of the pot to wring any liquid from it and dispose of bag.
Turn heat to medium and stir in white chocolate until melted and drink is smooth.
Transfer to an 8-ounce mug and top with whipped cream and a sprinkle of cinnamon if desired. Enjoy!
Notes
*For a richer drink, you can add a splash of heavy cream to your measuring cup before filling it the rest of the way with milk.