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Homemade Oat Milk: How To Make It

You only need three simple ingredients to whip up this Homemade Oat Milk recipe. Perfect to add to your coffee or tea quickly for a traveling workweek or window shopping, this quick oat milk recipe is sure to become a regular thing.

There should be no reason why Oat Milk mixed with your fave coffee is not a part of your morning routine.

This delicious Starbucks recreation goes into an Iced Brown Sugar Oat Milk Shaken Espresso is perfect for the ride to work or rallying up the kids for school. If you're anything like us, you totally deserve a pick-me-up caffeine boost before doing either of those tasks :).

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Looking down on jar of oat milk.

And it's a serious BONUS to add to any caffeinated beverage if you're about to slump over your desk at your 5th mid-afternoon Zoom meeting.

This easy oat milk gives you enough of an energy boost to power through any hectic schedule with ease. Large part due to the rolled oats, but the added spoonfuls of honey helps it stick to you and gives you that energy boost you've been craving.

Homemade Oat Milk Is Perfect For

  • Window shopping
  • Hectic schedules
  • Pre-workouts
  • Conference calls

Why You’ll Love This

  • Another non-dairy milk alternative to choose from
  • Cheaper to make than paying expensive specialty store prices
  • Healthy option
  • Nutritious option to add to your beverages
Ingredients for homemade oatmilk.

Ingredients To Have On Hand

Looking for the ingredients to give this fantastic milk a try? Here's what you'll need:

  • Rolled oats
  • Water
  • Honey

Tools Needed

How To Make Oat Milk In Jars

  1. Place ingredients into a blender or food processor.
  2. Blend on high for 3 minutes.
  3. Pour over cheese cloth to strain. Squeeze all the liquid from the cheese cloth.
  4. Place in the fridge and shake well before using in your beverage of choice.
  5. Enjoy!

All About Oat Milk

One of the remarkable things we love about modern technology is the advancement of food processing equipment. In the late nineties to early 2000s, it would have been extremely hard to find oat milk, much less, someone, to teach you how to make it yourself.

For plant-based eaters, this is a dream come true! With the use of oat milk, you can enjoy old-school favorite treats such as cereal (who knew you'd miss eating cereal?), macaroni and cheese, cheese grits, and even pizza!

Plus, it's a simple recipe to make at home, leaving more room in your budget for other things. All you need is oats, a strainer, a bowl, a high-powered blender, and flavorings like vanilla or cinnamon extract.

What Is Oat Milk?

DIY Oat Milk is just as it sounds. It's just rolled oats and water blended together then strained in cheesecloth to remove the pulp. This oat milk recipe also adds a dash of honey to sweeten it up just a tad.

Oat Milk Is Easy To Pair With

  • Biscuits and toast
  • Meats
  • Gourmet bagels
  • Oatmeal
  • Fruits
  • Seeds and nuts
  • Grits
  • In a Smoothie
  • In a Powerfoods Shake
Oat milk in a jar with picnic table cloth behind it.

Recipe Variations and Tips

  • Swap Honey- You can swap the honey out for your other flavored sweeteners, like Agave, Maple Syrup, or Stevia. If you're feeling extra sweet, try white sugar or brown sugar. We use brown sugar in our Brown Sugar Oat Milk Shaken Espresso recipe (coming soon).
  • Add a teaspoon of Melted Butter- we're talking almond butter, sunflower butter or peanut butter- not regular dairy butter.
  • Add other ingredients to thicken it up- try adding some other things like chia seeds or hemp seeds.
  • We've found that as the oats expand (soaking up the oat milk and the additional sugars) it loses a bit of flavoring, but adding in an extra dab of maple syrup fixes this issue.
  • If your oats are slightly slimy in texture, you can strain the oat milk again before adding to create milk.
  • You can try to use a strainer instead of a cheesecloth. Sometimes this will let too much of the oat pulp through, so generally we recommend a cheesecloth or a tighter knit mesh strainer.
Can You Use Steel Cut Or Quick Oats?

We don't recommend using the steel-cut oats as they're too unprocessed and the milk texture doesn't turn out as nice.

Quick oats are too finely processed and tend to result in slimier milk and oats as well.

So, as we recommend, rolled oats are the way to go for this homemade milk recipe.

How Do You Store Oat Milk?

We highly recommend storing homemade milk in your Mason Jars in the refrigerator.

How Long Is Oat Milk Good For?

This DIY milk doesn't last long- only about 4-5 days or so. If it starts to smell funky, toss it.

How Healthy Is It?

One good thing about this homemade milk is the sugar content is from natural sources. However, it is quite high in carbohydrates compared to other milk sources.

it also provides a good about of riboflavin (B12) compared to cow's milk.

What Are The Disadvantages of Homemade Oat MIlk?

Homemade Oat Milk isn't fortified like commercial brands so it's not as nutrient-dense. It also has a higher sugar content than many other milk sources.

Why Is My Oat Milk Slimy?

Do It Yourself Oat Milk can turn out slimy if you over blend the water and oat mixture.

If you presoak your oats, this will also cause your oats to turn slimy so be sure not to do that!

Why Did My Milk Separate?

No big deal if it does. Just give the jar a shake before using and it will blend right back together.

It is very common for non-dairy milk alternatives to separate while sitting still. That's why we always recommend to SHAKE it before enjoying it.

easy diy milk in a jar.

Other Mason Jar Recipes To Try Out

Homemade Oat Milk in a jar with red red and white plaid

Brown Sugar Oat Milk

With just 3 ingredients and 6 minutes prep time, you can have this homemade Brown Sugar Oat Milk whipped up and ready to check off your massive to-do list in no time!
Print Pin Rate
Course: Breakfast
Cuisine: American
Keyword: Brown Sugar Oat Milk
Prep Time: 6 minutes
Total Time: 6 minutes
Servings: 32 ounces
Author: Mason Jar Recipe


  • 2 cups Rolled oats
  • 4 cups Water
  • 2 tablespoon Honey


  • Place ingredients into a blender or food processor.
  • Blend on high for 3 minutes.
  • Pour over cheese cloth to strain. Quest all the liquid from the cheese cloth.
  • Place in the fridge and shake well before using.

Nutritional Disclaimer

These Nutritional Facts are ESTIMATED. Your actual nutritional info with this recipe may vary depending on the brands you choose. “Mason Jar Recipe” is not a registered dietician or nutritionist. The provided nutritional info above is based on a generic calculator, if you want more accurate info, use your nutritional calculator of choice where you can choose brands and get more info that way.

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