How to Make Homemade Oat Milk Using a Nut Milk Bag

Learn how to easily make oat milk using a nut milk bag at home.

Have you explored homemade plant-based milk? The art of crafting your own dairy-free alternatives isn’t just a trend, but a delightful journey towards a healthier, more sustainable lifestyle. Today, we’re diving into the creamy, wholesome goodness of oat milk, made right at home using a simple yet effective tool – the nut milk bag.

For many, the concept of oat milk might still be a novelty. I remember mentioning it to my pediatrician, who, along with the nurse, was baffled at the idea. They thought I said “oak milk”! Yes, oat milk, made from nutritious rolled oats, is a real thing. It’s my go-to choice for my morning coffee, especially since I’m sensitive to lactose. Plus, with the increasing awareness about sustainability, finding an eco-friendly alternative to the not-so-recyclable milk cartons has become more important than ever.

homemade oat milk weck jar

Not only is homemade oat milk a healthier option, devoid of preservatives and unnecessary additives, but it’s also the best option for those looking to reduce their environmental footprint. And the best part? It’s incredibly easy and rewarding. So, let’s get started and see how you can transform rolled oats into a delicious, creamy milk alternative with just a few simple ingredients and a trusty nut milk bag.

Stay tuned as we guide you through the entire process, from preparation to storage, and even how to utilize the leftover oat pulp. Get ready to enhance your daily diet with this versatile, homemade plant-based milk.

The Rise of Plant-Based Milks

The rise of plant-based milks has been remarkable in recent years, with more individuals opting for these dairy alternatives for various reasons. Making oat milk at home using a nut milk bag is not only a healthier option but also more eco-friendly compared to store-bought versions. By avoiding preservatives and unnecessary additives, homemade oat milk allows for full control over the ingredients, ensuring a pure and natural product that aligns with my values and dietary preferences. 

Oat Milk Recipe

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What You’ll Need


oat milk ingredients

I hate cleaning the blender, so I usually make this in a double batch so I have to make it less often. You can play around with the maple syrup and vanilla extract to your desired taste. I also decided to get extra fancy with this one and use my favorite Weck jars.

Oat Milk Recipe

Preparation of Oats

  • To eliminate any potential slimy texture, rinse the oats thoroughly under cold water. 
  • Next, take the rinsed oats and soak them in 6 cups of filtered ice-cold water in a large bowl for at least 30 minutes or up to overnight. 
  • The soaking helps break down the oats and releases their natural starches, resulting in smooth and non-slimy oat milk. 
oat milk directions dairy free

Blending the Ingredients

  • Next, I pour in 6 cups of filtered ice-cold water to ensure a non-slimy oat milk texture. 
  • Then, measure out 4 tsp of maple syrup and add it to the blender. 
  • After that, carefully pour in 1 tsp of vanilla extract for a delightful flavor. 
  • Finally, add a pinch of salt to enhance the overall taste. 
  • With the lid securely in place, blend the ingredients on high speed until the mixture becomes smooth and creamy, ensuring the water remains cold throughout the blending process. 

Straining with a Nut Milk Bag

Squeezing the bag gently but firmly, I extract all the liquid, ensuring a creamy consistency. After all the liquid is collected, I carefully handle the leftover pulp. This can be utilized in various recipes, or stored properly for future use. 

The recipe is super simple. You just have to mix it all together. Many recipes cautioned about different ways the milk can become slimy (more like oatmeal). I have not had that problem at all. I think it’s because I bought a nut milk bag instead of just using a strainer. You are supposed to let most of it fall out on its own and just give it a gentle squeeze. If you over squeeze it, you will start to get the oats and it may become slimy.

Homemade Oat Milk Storage and Shelf Life

A mason jar or any glass container with a tight lid works best to maintain the freshness. I love my Weck milk jars for this. Homemade oat milk usually stays good for about 4-5 days when refrigerated properly.

However, it’s important to note that natural separation may occur, where the liquid and solids separate. If separation occurs, simply give the oat milk a good shake before use to blend the contents back together. This will ensure a consistent texture and flavor. Remember to check for any unusual odors or signs of spoilage before consuming. 

Why Choose Oat Milk?

Oat milk is an excellent alternative to regular milk. I chose oats over almond milk as it has less of an environmental impact (almonds are harder to grow). Let’s hope this trend catches on!

Using the Leftover Oat Pulp

This precious byproduct of oat milk making can be put to good use in various recipes, reducing waste and adding nutritional value to meals. 

One great way to use this oat pulp is in baking. Incorporating it into recipes for muffins, cookies, or bread can add a fiber and nutrient boost to these treats. You can also mix the pulp into smoothies or yogurt for an extra dose of fiber and texture. 

For savory options, you can use the oat pulp in veggie burgers, veggie meatballs, or as a thickening agent for soups and stews. The neutral flavor of the oat pulp makes it versatile for both sweet and savory dishes. 

Remember, if I’m not able to use the oat pulp right away, it’s essential to store it properly. I can refrigerate it in an airtight container for a few days, or freeze it in portioned amounts for use in future recipes. This way, I can make the most of this valuable and versatile ingredient without waste. 

Oat Milk in Daily Use

You can use oat milk for:

  1. A nourishing bowl of overnight oats, soaking the oats in oat milk overnight and topping them with fresh fruits and nuts for a delightful breakfast. 
  2. Incorporating oat milk into savory recipes brings a creamy texture and subtle sweetness to dishes. Add it to creamy soups, sauces, and curries, enhancing the overall flavor profile. 
  3. For a comforting beverage, oat milk’s creamy consistency makes it the perfect addition to a warm cup of coffee. It adds a delightful creaminess without overpowering the rich coffee flavor. 
  4. Add it to a smoothie for a boost of nutrition and a creamy flavor.
overnight oats with blueberries

Nutrition Content of Oat Milk

Homemade Oat milk typically contains about 2-4 grams of protein per cup (compared to 8g in cow’s milk), depending on the concentration of oats used. However, homemade versions might have slightly less protein since commercial varieties often add protein-rich ingredients like pea protein.

Nut Milk Bag Alternatives

  • Cheesecloth: Multiple layers of cheesecloth can be used to strain the oats, though it might not be as effective at removing fine particles as a nut milk bag.
  • Fine Mesh Strainer: A fine mesh strainer can work, especially if you don’t mind your oat milk having a bit more texture.
  • Clean T-Shirt or Cloth Napkin: A clean, fine-woven fabric like a t-shirt or cloth napkin can be a good makeshift strainer.
  • Almond Cow Machine: This machine blends the oats and also strains them. I used one for about 1-2 years, but unfortunately, my machine died, so I cannot recommend it.

Cost-Effectiveness of Making Oat Milk at Home

Homemade oat milk can indeed be more cost-effective than buying it from the store, especially if you buy oats in bulk. The primary cost is the oats themselves, and since oats are generally inexpensive, making your own oat milk can be quite economical. The initial investment in a nut milk bag or alternative straining tool is relatively minimal and is a one-time purchase.

Cheers to Your Health and Taste

Making creamy oat milk using a nut milk bag is not only simple but also incredibly rewarding. I was pleasantly surprised by the rich, creamy texture and delightful taste that surpassed many store-bought versions. 

By opting for homemade oat milk, you’re choosing a healthier and more eco-friendly alternative to traditional cow’s milk or even store-bought oat milk. Not only does it allow you to control the ingredients and avoid additives, but it’s also a sustainable choice with minimal packaging waste. The satisfaction of creating something so pure and nutritious from scratch is truly unbeatable. 

I encourage you to experiment with different flavor twists and optional add-ins, such as a hint of vanilla, a sprinkle of cinnamon, or a touch of brown sugar, to personalize your oat milk to your taste preferences. The versatility makes it an excellent base for various recipes, from lattes and smoothies to creamy soups and baked goods. 

After trying this recipe, I invite you to share your experiences and variations on social media. Share your delicious homemade oat milk creations, inspire others, and exchange tips with fellow oat milk enthusiasts. Your unique twists and flavor combinations might just encourage others to dive into the world of homemade dairy-free milk. 

So, here’s to your health and taste. Embrace the simplicity, the health benefits, and the pure satisfaction of crafting your own creamy oat milk with a nut milk bag. Join me in savoring the joy of homemade oat milk and the endless possibilities it brings to your everyday meals and drinks. 

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Oat Milk

Oat Milk

Easy to make alternative to dairy milk.


  • 1 cup whole rolled organic oats
  • 6 cups filtered ice cold water
  • 4 tsp maple syrup
  • 1 tsp vanilla extract
  • 1/4 tsp sea salt


1. Combine ingredients in blender for 30 seconds

2. Strain the milk in a nut milk bag or through cheesecloth. Do not mash oats or it will become slimy.

3. Put into air tight container and store for up to a week.


I usually make a double batch!

About the Author:

I’m Brittany, totally modern and mainstream turned crunchy mama!

Read more here about how I went from a totally incompetent cook and hyper-consumer to striving to live a more meaningful life from scratch.

I can’t wait to share my modern homesteading journey with you and I hope I inspire you to join along!

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