Here’s how to make this cozy hot beverage in your slow cooker:

1. Prepare the Crockpot:
   Set your crockpot to low heat. Use a 2.5‑4 quart slow cooker for best results.
2. Combine the Base Ingredients:
   In the crockpot, add 5 cups of whole milk, 1 cup of half and half cream, 3/4 cup of granulated sugar, 1/2 cup of semisweet chocolate chips, and 1/2 cup of unsweetened cocoa powder.
3. Mix Until Smooth:
   Whisk everything together thoroughly, making sure to dissolve the cocoa powder completely so no clumps remain. This gives you that silky texture you love in hot chocolate.
4. Heat and Melt:
   Cover and cook on low for 2 hours, stirring occasionally. The chocolate chips will melt and blend with the milk mixture, infusing rich chocolate flavor.
5. Add Flavor:
   Once the hot chocolate is hot and creamy, stir in 1 teaspoon of vanilla extract. This brightens the flavor and adds depth.
6. Serve With Toppings:
   Ladle into mugs and top each with mini marshmallows. For extra fluffy marshmallows, place them on top and let the heat of the cocoa soften them slightly.
7. Optional Rest:
   If you like softer, melty marshmallows, cover again, turn the slow cooker off, and let sit for 5 minutes before serving.

That’s it! You now have a pot of dreamy hot chocolate ready to enjoy.