3 Tbsp sugar
1 envelope mint hot chocolate mix
2 Tbsp unsalted butter
1/2 cup chocolate chips
1/2 cup mint chocolate chips
1 (12-oz) can evaporated milk
4 cups ice
Whipped cream (optional garnish)

Add the sugar, hot chocolate mix, and butter to a double boiler. Stir to combine and then add the chocolate chips. When the chips are melted, stir in 9 ounces of the evaporated milk. Let the mixture cool.

Combine the cooled chocolate mixture, remaining evaporated milk, and ice in a blender. Blend, pour into glasses, and garnish with whipped cream, if desired.