Combine the milk and half and half in a saucepan over medium-low heat.
4 cups milk, 2 cup half and half
When the milk mixture is warm, add both kinds of chocolate chips, sugar, and vanilla.
1 cup bittersweet chocolate chips, 1 cup semisweet chocolate chips, 2 teaspoons sugar, ½ teaspoon vanilla extract
Continue to heat until melted and fully incorporated, stirring occasionally.
Top with whipped cream, if desired.
Notes
Nutritional information is only an estimate and will change depending on what type of milk is used. These calculations do not include whipped cream.Source: Adapted from the Pioneer WomanYou're Gonna Bake It After Allbakeitafterall.com