I've been going to this recipe lately, especially when the "instant" powder is out of stock at home. I make mine a dairy-free version but you can use whatever version you have on hand...
You need... for each serving;
1 cup of milk (soy, rice, almond all work fine)
1 tbsp of cocoa powder
1 tbsp of chocolate chips (I use pure chocolate but can easily use milk chocolate, etc.)
1 tsp vanilla extract
and if you would like it a little extra sweet and decadent...
1 tsp or more of maple syrup (or other sweetener like rice syrup, honey, etc.)
What you do...
Put all ingredients in a pot on the stove, set to a medium setting. Mix while slowly heating milk and melting chocolate chips. I find using a whisk is helpful especially with getting that cocoa powder mixed in.
Once heated and melted, pour into mug(s) and top as you'd like with marshmallows, whipped cream, chocolate shavings... whatever you like.
A nice way to warm up on these cold days and nights!