Step 1

Bring milk and cinnamon to a simmer in a medium saucepan over medium-low heat, whisking occasionally and making sure milk doesn’t boil, until cinnamon is floral and fragrant, about 10 minutes. Whisk in chocolate, sugar, vanilla, salt, and ¼ tsp. ground chile and cook, whisking frequently, until mixture is smooth and creamy and chocolate is melted, about 5 minutes.

Step 2

Divide hot chocolate among mugs. Top with whipped cream and dust with cocoa powder.