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! 

Matcha Green Tea
Combine matcha with water using a matcha whisk

Iced Matcha Latte With Oat Milk Recipe

Prep Time 5 minutes


  • Small bowl
  • Matcha whisk
  • Drinking glass
  • Hand-held milk frother optional


  • 2 tsp ceremonial grade matcha powder
  • 1 tbsp hot water
  • 1 tsp honey or agave nectar optional
  • 1/2 cup ice
  • 1 cup oat milk
  • A dash of cinnamon optional


  • Prepare the hot water. Room temperature water is fine, but the hot water allows the matcha to dissolve more easily as well. Avoid using cold water, as this can cause the matcha to bind together in big clumps.
  • 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 ceramic or textured bowl will help break up any lumps while mixing and accelerate the process.
  • Pour in honey, agave, or other sweeteners into the mix, and continue to whisk until smooth. Liquid sweeteners mix better than granulated sugars and add to the velvety texture of the matcha.
  • Add ice and oat milk to a fresh glass of your choosing. Pour the matcha mixture over the iced oat milk and gently stir. While it may seem faster and easier to just create the matcha mixture in the drinking glass and top it 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.
  • For an extra topping, take some additional oat milk (or oat milk creamer) and froth it in a separate cup for 30 seconds. Then, pour it over the latte, sprinkle some cinnamon on top, and enjoy your drink!


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

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. Find Aisling on LinkedIn.