Perfect for the cooler weather, warm oat milk is a fun caffeine free drink that's equally delicious as a hot drink by itself with some added spice or stirred into coffee for an indulgent treat! Made with just 3 ingredients, I'll teach you how to heat oat milk on the stove top and in the microwave in just a few easy steps.
Warm milk drinks are so easy to make but feel quite indulgent don't you think? Heating oat milk is super simple and can be enjoyed with some spice as a warm oat milk drink as it is, or mixed with an espresso for a coffee or stirred into hot chocolate (likely not my low histamine readers).
In this post I show you that you can heat oat milk in two ways: on the stove top and in the microwave!
And do peek at my low histamine hot drinks for even more cozy caffeine free ideas!
⭐ Why this recipe is so good
Cozy caffeine free warm milk. Enjoy this hot oat milk drink as a little moment of down-time for an afternoon treat.
Add to coffee or hot chocolate. Use smaller amounts of warm oat milk to stir into coffee or hot chocolate for an indulgent treat. The latter likely isn't suitable for my low histamine readers.
No need for a coffee machine. We simply use a small pot on the stove top or the microwave, so need for any expensive equipment or gadgets!
Quick and easy. This warm drink with oat milk comes together in less than 10 minutes with just 3 ingredients.
All the ingredients and their quantities are set out in the recipe card below.
- Oat milk - an increasingly popular dairy-free milk, choose a gluten free brand if you have that dietary requirement. Personally I use an oat milk without added sugar and find that barista oat milk gives a creamier, thicker more indulgent taste and texture.
- Cinnamon or cardamom - to add a hint of spice.
- Honey - I suggest to use either honey or maple syrup to sweeten the drink.
📖 Swaps and variations
Swap honey for maple syrup. If you are vegan, then simply use maple syrup. I've used syrup on a recipe test and it was delicious!
Swap cinnamon for cardamom. If cinnamon doesn't work for you, then cardamom is a good alternative.
🔪 How to heat oat milk
If you're wondering how to heat oat milk on the stove top, it's super simple and means you don't need a coffee machine!
How to heat oat milk on the stove top
Step 1: Add oat milk and cinnamon to a pot
Combine the milk and spice in a small pot on the stove top (image 1). If you are simply heating oat milk in small amounts for coffee, leave out the spice.
Step 2: Whisk the oat milk drink
Bring the heat up to low-medium, using a whisk to infuse the spice into the milk (image 2). Heat for 5-6 minutes until warm, but not at a boil, stirring occasionally.
Recipe tip: Don't let the oat milk get too hot or boil as it will thicken too much and burn.
Step 3: Add honey
Take the pot off the heat and stir in the honey so it combines with the milk (image 3). If heating for coffee, leave out the honey.
Step 4 (optional): Strain the milk
If you wish, place a small strainer over your cups and pour the milk through to remove any gritty spice (image 4).
How to heat oat milk in the microwave
It's also very easy to heat oat milk in the microwave - just be sure that you are using a microwave-safe cup or mug and use a medium heat rather than high heat setting.
Step 1: Heat the oat milk
Pour your oat milk into your cup or mug. Heat the oat milk on medium (not high heat) for 15-20 seconds (image 1).
Step 2: Stir the oat milk
Stir the oat milk and then continue to heat in 15 second intervals, stirring each time, until it reaches the desired temperature (image 2). It typically takes 45-60 seconds if you are heating a whole cup of oat milk and less time for smaller amounts.
💭 Recipe tips and notes
- When warming the milk on the stove top, I find it best not to let it boil. This can burn the milk and distort the taste, as well as make the oat milk too thick.
- If heating oat milk in the microwave, make sure that your cup or mug is microwave safe.
- Keep the heat on medium rather than high if using the microwave to heat oat milk drinks. It can easily get too hot and overflow the cup otherwise.
- This guide is for a whole cup of oat milk, you will want to adjust the heating time if you are heating a smaller amount for making coffee or hot chocolate.
- Be sure to check your oat milk is certified gluten free if you have that dietary requirement.
- Adjust the amount of spice to taste preference (or leave out completely).
📋 Frequently asked questions
Oat milk is creamy with a hint of sweetness.
Whether an oat milk is gluten free or not will vary between brands, so be sure to check the carton to see if it is certified gluten free, using gluten free oats.
You can easily swap cinnamon for cardamom, nutmeg or ground ginger.
Oat milk can easily be heated in the microwave on medium heat (rather than high) and in 15-20 second intervals. Stir the oat milk each time, and heat for longer until you get the heat and consistency you like. Oat milk can easily become too hot and overly thicken so do heat in intervals.
The time to heat oat milk in the microwave will differ slightly depending upon the strength of your microwave, whether you are heating at medium or high (medium is recommended) and the amount of oat milk you are using. It will typically take 45-60 seconds to heat oat milk in the microwave.
☕ More fun drinks
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How to Heat Oat Milk
- 1.5 cups oat milk I suggest using barista oat milk
- ½ teaspoon cinnamon or cardamom
- 1 teaspoon honey or maple syrup
- To heat on the stove top: Pour your oat milk into a small pot and sprinkle in the cinnamon (or cardamom). Bring to a low-medium heat, whisking the milk to infuse the spice into the milk. Heat the oat milk for 5-6 minutes until it is warm with slight bubbling, but hasn't come to a boil. Take the pot off the heat and stir in honey or maple syrup. Optionally strain into your cups.
- To heat in the microwave: Pour the oat milk into your microwave-safe cup and heat on medium for 15-20 seconds. Stir the milk, then continue to heat at 15 second intervals, stirring each time, to the heat and consistency you like. It will typically take 45-60 seconds.
- If you are gluten free, check that your oat milk is certified gluten free.
- Bring the oat milk to a medium heat on the stove top so that it becomes warm. If you let it boil it can burn the milk and distort the taste.
- If using the microwave do heat in intervals on a medium heat. It can easily get too hot and overflow the cup if it becomes too hot, and the texture of the oat milk will get too thick.
- Use maple syrup instead of honey for a vegan drink.
- Nutritional information is auto-generated and should be understood to be an estimate.
- oat milk, which scores 1, with a note, 'often slightly histamine containing as fermented enzymatically'.