Oat Milk Hot Chocolate

Oat milk hot chocolate is a cozy and creamy hot drink and is totally plant-based. This drink will be a new favorite indulgence on snowy winter days. 

  • Author: Leanne Ray, MS, RDN
  • Prep Time: 3 minutes
  • Cook Time: 2 minutes
  • Total Time: 5 minutes
  • Yield: 1 cup 1x
  • Category: Drinks
  • Method: Microwave
  • Cuisine: American
  • Diet: Vegan


  • 1 tablespoon (7 grams) unsweetened cacao powder 
  • 1 tablespoon (12 grams) cane sugar
  • 1 teaspoon (7 grams) vanilla bean paste or extract
  • pinch of kosher salt
  • 1 tablespoon hot water
  • 1 cup (240 grams) oat milk 
  • optional: pinch of cayenne pepper


  1. Add cacao powder through water to your largest mug (water can come from tap, or you can heat in the microwave if needed). Stir to form a thick chocolatey syrup. 
  2. Meanwhile heat oat milk in a microwave-safe dish, like a liquid measuring cup, for 90 seconds (or until it reaches your preferred temperature).
  3. Pour oat milk over your chocolate syrup and stir with a spoon to combine. If you have a milk frother, you can use it to get the top all foamy and delicious.
  4. Transfer to a smaller mug using the barista latte trick: use a large spoon to hold back the foam while you pour the hot chocolate, then spoon out the foam and/or pour it out last so it’s on top. Garnish with a pinch of cayenne pepper if using. Serve immediately. 



  • The equipment section above includes affiliate links to things I use often in my kitchen and recommend. 
  • Cacao powder is similar to cocoa powder and often used interchangeably. Just be sure it’s unsweetened and not the Dutch-processed variety. 
  • Stovetop directions: Add cacao powder through hot water to a small saucepan and heat over medium, whisking to combine until it forms a syrup. Pour in the oat milk while continuing to mix as you heat to a simmer. Remove from heat and use a milk frother or a whisk to get it foamy. Pour into a mug and enjoy! 


Keywords: vegan hot chocolate, hot chocolate for one, single serving hot chocolate, oat milk, holiday drinks