Gather the ingredients - * Dark chocolate chips * Milk chocolate chips * Sweetened condensed milk * Butter * Hot cocoa powder * Vanilla extract * Dehydrated marshmallows
Place sweetened condensed milk and butter in the bowl of a double boiler and heat over medium heat, stirring frequently until heated through and well mixed.
Add in both kinds of chocolate chips and continue heating until the chocolate chips are melted through and well mixed.
Add in vanilla and hot chocolate mix and stir until thoroughly mixed.
Pour the mixture evenly into the prepared pan.
- Immediately sprinkle with marshmallows. - Place in the refrigerator for at least 4 hours. - Once the fudge has fully set, cut and serve.