In a blender, combine the cocoa powder, sugar, salt, and 1 cup of the whole milk. Blend until smooth.
Pour the blended cocoa mixture into a slow cooker, ensuring you scrape out every bit.
Pour in the remaining 5 cups of milk, heavy cream, and vanilla extract. Stir to combine.
Cover the slow cooker and set it to low. Cook for approximately 2 hours, stirring occasionally. The hot chocolate is ready once it’s warmed to your liking. (Don’t cook on high; this can curdle the milk.)
To get your toppings just the right size, use a nut grinder, small food processor, or a mini blender. Pulse down cookies, pretzels, and nuts to your desired coarseness. Once you’ve prepped all your toppings, grab a muffin tin and line it with muffin liners, or use miniature bowls, to organize and display each choice.
Organize your serving area with the Crock-Pot of warm hot chocolate, any sauces and/or toppings, and whipped cream. Ensure hot chocolate cups are available for guests to use.
Once warmed, ladle the hot chocolate into mugs. Top with your preferred toppings and enjoy!
Notes
Note 1: Supplies:
Individual hot chocolate cups or mugs: I get the cups, lids, and cup sleeves all on Amazon. Here’s exactly what I use!
Little mini wooden scoops (for the topping containers): Found here.
Optional: This nut grinder is my favorite tool when preparing the toppings for this Hot Chocolate Bar! It’ll quickly chop up cookies, nuts and seeds, and candies in a whiz.