How To Make An Iced Matcha Latte With Oat Milk: 4 Easy Steps

In this article, we explain how to make an iced matcha latte with oat milk. Tasty! 

How to make an iced matcha latte with oat milk
Matcha comes from ground green tea leaves

If you are new to the exciting and delicious world of matcha, have a seat! Matcha is a green, powdery substance that comes from finely ground green tea leaves

Originating from Japan, matcha has an earthy, yet refreshing flavor, often found in ice creams, baked goods, and – you guessed it – lattes. The signature vibrant, green hue is an eye-catcher, but the flavor keeps everyone coming back for more! 

I love matcha lattes because they’re a great alternative to a cup of coffee or espresso. The caffeine content found in matcha is typically lower than a standard cup of coffee, but the effect is vastly different. The energizing effect is slow and steady, meaning you feel comfortably energized over a longer time and get to skip that instant burst of coffee jitters. 

Matcha contains L-theanine. It’s an amino acid that reduces stress by increasing alpha waves in your brain. Combined with caffeine, L-theanine reduces drowsiness and improves concentration. 

While we all love an Instagrammable latte from a local cafe, it is effortless (and pretty satisfying, to be honest) to make your matcha latte at home. A heads up: you can use whatever milk you prefer, but I highly suggest oat milk with this recipe. 

Oat milk has the perfect creamy, slightly nutty flavor that creates a fantastic base for this beverage, and best of all – it’s dairy-free! 


  • 2 tsp ceremonial grade matcha powder 
  • 1 tbsp hot water 
  • 1 tsp honey or agave (optional sweetener) 
  • ½ cup of ice 
  • 1 cup of oat milk 
  • A dash of cinnamon (optional) 


  • Small bowl 
  • Matcha whisk 
  • Drinking glass 
  • Frother (optional)

How To Make An Iced Matcha Latte With Oat Milk In 4 Simple Steps

Step 1: Mixing Your Matcha 

Matcha Green Tea
Combine matcha with water using a matcha whisk

In a small bowl, combine your matcha and water and whisk moderately for about 30 seconds, or until a smooth, dark green liquid is achieved. A matcha whisk is best for this, but any small whisk will do. 

Tip: A ceramic or textured bowl will help break up any lumps while mixing and accelerate the process. Room temperature water is fine, but the hot water allows the matcha to dissolve easier as well. Avoid using cold water, as this can cause the matcha to bind together in big lumps. 

Step 2: Add Sweetener (Optional) 

Honey in a jar, 2 cups of coffee and a saucer with bread loaves
Add sweeteners such as honey

Pour in your honey, agave, or other sweeteners to the mix, and continue to whisk until smooth. This can be done to taste or skipped for a more crisp and bitter flavor. 

Tip: Liquid sweeteners mix better than granulated sugars and add to the velvety texture of the matcha. 

Step 3: Combine Your Ingredients 

In a fresh glass of your choosing, add your ice and oat milk. Pour the matcha mixture over the iced oat milk and gently stir. 

Tip: While it may seem faster and easier to just create the matcha mixture in the drinking glass and top with ice and oat milk, this method will likely leave bitter matcha lumps at the bottom of your drink and unevenly mix with the added oat milk and ice on top. Pouring the finished matcha mixture into a fresh glass of milk allows for a more flavorful and blended latte. 

Step 4 (Optional): Add Toppings 

When I feel fancy, I love to take some additional oat milk (or my favorite oat milk creamer) and froth it in a separate cup for 30 seconds. Then, I pour it over the latte and sprinkle some cinnamon on top for an added creamy and sweet element!

If you liked this post, you might also like our round-up of the best coffees for oat milk.


  • Aisling O'Connor

    Aisling is an Irish food and drinks writer and journalist fueled by coffee and herbal tea. She followed up her journalism degree with nutrition studies.