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6 Comments

How to Make Oat Milk With Protein

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by Lindsay Cotter Updated: Dec 22, 2024

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Photos showing how to make oat milk with protein with a text overlay for pinterest.
Bottles of homemade oat milk with protein with a text overlay for pinterest.

Learn how to make oat milk at home! This homemade oat milk recipe is quick to make and turns out extra creamy every time. We’ll show you how to boost oat milk protein and add flavor with real food ingredients! Pour it over gluten-free cereal, add it to baked goods, and more! 

three glass jars of oat milk, the largest in the center labeled oat milk, the smaller jar on the left labeled chocolate, and the smaller. jar on the right labeled vanilla this for later

  • Outrageously Delicious Oat Milk
  • What Exactly Is Oat Milk?
    • Is Oat Milk Healthier than Dairy Milk?
  • Nutritional Information of Oat Milk
  • What Types of Oats are Best to Use?
  • How to Boost Oat Milk Protein + Nutrition
  • How to Make Oat Milk + Flavor Options
    • Basic Homemade Oat Milk
    • How to Add Flavors & Protein
  • How to Prevent a Slimy Texture
  • How to Store
  • Common Questions

This blog post is sponsored by our friends at Further Food and their Collagen Peptides! Thank you for supporting the brands that help me to create delicious gluten-free recipes like this one for you! Full disclosure and privacy terms here.

Outrageously Delicious Oat Milk

Have you tried oat milk yet? These days, it seems to be all the rage! Do people still say that? Regardless, it’s super popular and has taken over everything from your local coffee shop, to the dairy aisle, ice cream, and more! Naturally, we had to check out what all the fuss was about, and all we can say now is that we totally get it! Not only is oat milk dairy free and gluten-free, but It’s completely delicious and one of the creamiest dairy alternatives we’ve ever tasted! Whether you want to mix it into your favorite lattes, use it to bake donut, or simply pour it over a bowl of cereal, you definitely can’t go wrong! 

However, when we went to pick up a carton (or 10) to add to our fridges, we couldn’t help but notice that many store-bought varieties are made with added sweeteners, thickening agents, and chemicals we don’t always love. So, we decided to take out the fluff and simplify the recipe, creating our homemade oat milk! We didn’t stop there, though. Oh no, we also boosted the protein content and provided lots of flavor options to fit all your needs! Whether you’re looking for a nut milk alternative, avoiding dairy, or just want to try something new, we’ve got you covered. 

Keep reading to learn how to make oat milk with protein, storage options, ways to use it, and so much more! 

What Exactly Is Oat Milk?

If you’re confused by the name, you’re not the only one. If you’re wondering, no, oats don’t produce milk. The name is simply used to describe dairy free liquids that resemble traditional dairy milk and are used in many of the same ways. 

That said, oat milk is a plant-based milk that is derived by soaking whole oats in water, blending them, and draining the liquid with a cheesecloth. 

As a result, it has a mild nutty or earthy flavor and is gluten-free, dairy-free, and nut-free, making it a great alternative for those with one or multiple food allergies or intolerances. 

Is Oat Milk Healthier than Dairy Milk?

It depends! For those who can tolerate dairy, regular milk is a great option full of vitamins, nutrients, and protein. However, for those who cannot tolerate the lactose or casein in milk, oat milk is likely the healthier option. Of course, health is individualized. So, it’s important to consult your doctor with any specific concerns. 

glass jars of oat milk with the center jar labeled chocolate

Nutritional Information of Oat Milk

If you’re looking at the nutritional label of oat milk varieties in the store, you’ll probably notice they vary quite a bit. That’s because there are endless ways to make this milk! However, when it comes to basic homemade oat milk without any additives, the nutrition is simple. It’s: 

  • Low calorie
  • Gluten-free
  • Dairy-free
  • Nut-free
  • Low-fat
  • Low-sugar
  • But high in crucial nutrients like calcium and vitamin D! 

What Types of Oats are Best to Use?

When it comes to making gluten-free oat milk, certified gluten-free old-fashioned rolled oats are best. Quick oats are too small and create a slimy texture, and steel cut oats have not been cut or processed enough to yield enough liquid. Read more about the differences between all the oat types here! 

overhead image of raw gluten free oats in a blender

That said, always be sure to check that your oats were made in a facility that has been certified as being gluten-free. Otherwise, you run the risk of cross-contamination with other gluten-containing ingredients! 

How to Boost Oat Milk Protein + Nutrition

A common complaint we hear when it comes to plant-based milk alternatives is that they’re missing out on all the protein and nutrients found in regular milk. Luckily, there’s a super easy (and extra tasty) way to boost your oat milk protein and add even more nutrients, and the answer is collagen! 

jars of Further Food collagen peptides including chocolate collagen powder, vegan beauty collagen powder, and vanilla collagen powder

If you don’t already know, collagen is an important structural nutrient in our bodies that provides a wide variety of benefits. (Source) For, instance, adding collagen to your diet can: 

  • Help keep skin elastic
  • Restore and repair cartilage in joints 
  • Improve digestion
  • Reduce inflammation
  • Plus it’s completely free from lactose or casein, gluten free, and nut free. 

We like to mix in Further Food Unflavored Collagen Peptides, or get creative with different flavors like vanilla bean, or chocolate! More on those flavor options below!

overhead image of a woman's hand dumping a scoop of collagen powder into a blender full of homemade oat milk
glass jars of vanilla oat milk next to a tub of vanilla Further Food collagen powder

Nutrition Tip – Did you know collagen also contains 18 amino acids which are crucial to building and maintaining muscle! Therefore, when combined, oat milk and collagen provide a great source of calcium, vitamin D, and protein to help promote muscle growth, recovery, and gut health in children and adults alike.

How to Make Oat Milk + Flavor Options

If you’ve ever made other plant-based milks like oat milk or even hemp milk, you’re probably used to trying to wring as much liquid out of the cloth or bag as possible. However, oat milk is different! If you do this, you’re almost guaranteed to get a slimy and grainy texture.

Overhead view all ingredients for homemade oat milk.

Basic Homemade Oat Milk

Instead, follow our method below for extra creamy and smooth homemade oat milk, and be sure to take a look at the recipe card for complete instructions. 

overhead image of raw gluten free oats in a blender
water being poured into a blender to make oat milk
overhead image of homemade oat milk in a blender
  1. Blend the oats with water. 
  2. Add sweetener (if using) and salt, and blend again. 
  3. Pour the oat mixture over a mesh cloth in a colander. Do NOT squeeze the excess pulp! This will create a gummy texture. 
homemade oat milk being poured from a blender into a jar with a cheesecloth
A cheesecloth straining oat milk over colander and mixing bowl.
straining pulp
Overhead view strained oat milk in colander in mixing bowl.

How to Add Flavors & Protein

When it comes to oat milk, the variations are endless. Here are some of our favorite ways to give it a boost! 

  1. Add Fruit. Once drained, add your milk to a blender, and blend it with your favorite fruit like bananas or strawberries for extra flavor! Then, strain the liquid once again to remove any seeds or flesh from the fruit and keep the smooth milk-like texture. 
  1. Add Healthy Fat Sources. Blend in a few tablespoons of coconut butter or sunflower butter! Trust us, it adds a rich taste and makes your oat milk extra creamy!
  2. Use Fun Mix-Ins. Feel free to get creative with mixable ingredients like cocoa powder, maple syrup, or date paste.
  3. Add a Boost of Protein! As mentioned above, adding collagen to homemade oat milk can quickly boost protein and nutrients!  Depending on your goals, there are lots of options to choose from, and the flavors are endless! Some of our favorite collagen additions include: 
overhead image of a woman's hand pouring a scoop of chocolate collagen powder with homemade oat milk in it
overhead image of chocolate oat milk in a blender
  • Further Food Unflavored Collagen Peptides to ramp up the protein content and benefits of our oat milk without affecting the flavor. 
  • Further Food Vanilla Collagen Peptides to create an extra rich and creamy taste and texture. Plus, the addition of Organic Tremella Mushroom keeps skin hydrated & increases skin elasticity, naturally. Oat milk with anti-aging benefits, anyone? 🙂
  • Further Food Chocolate Collagen Peptides infused with Reishi Mushroom for a decadent chocolate flavor that’s so good for you, too! 

Vegan Protein Swap: Following a vegan diet but still looking to add a boost of quality protein? We got you! This Vegan Beauty Collagen Booster provides similar health benefits as grass-fed beef collagen but is made with pea protein and MCT oil for a completely plant-based alternative. Plus, it contains cocoa for a crazy delicious chocolate taste and texture! 

How to Prevent a Slimy Texture

The biggest complaint we hear when people learn how to make oat milk at home is that it has a slimy texture. Luckily, after testing, retesting, and testing this recipe again, we’ve gathered a few tips to help you avoid this! 

  1. Keep the Oats Cold. Heat can make the oats a little gummy (think cooked oatmeal) so be sure to use ice-cold water.
  2. Don’t Soak Your Oats. Don’t let the oats sit in the water. Just toss them together, and blend!
  3. Be Careful Not to Overblend. If you blend for too long, the friction will cause the ingredients to warm, leading to a slimy texture. For the best results, don’t blend longer than 30 seconds!
  4. Strain Twice. Be careful not to press too hard when straining the liquid. However, you might also want to strain your oat milk twice to remove any extra starch that may slip through. 
overhead image of oat milk in bottle, close up

How to Store

Once blended, oat milk should be placed in an airtight jar or container and kept in the fridge for up to 5 days. 

Note: Due to the fact that no emulsifiers or added ingredients are used, your milk will separate as it sits in the fridge. This creates a thin layer of separation on top. It’s totally normal! Just give your milk a gentle shake before using. 

Common Questions

Can this recipe be heated? 

No, once heated, the proteins found in oat milk will coagulate and create a thick texture. Due to the lack of fat, it also doesn’t froth well. 

Does oat milk have lactose? 

No! As long as no dairy ingredients are added, oat milk is completely free from lactose! 

What should I do with the leftover oat pulp? 

Before you throw it away, try using your leftover oat pulp in cookies, bread, fruit crumbles, overnight oats, and more! (Source) 

How do you use oat milk?

Gluten-free oat milk can be used in many of the same ways you would use regular dairy milk or plant-based milk alternatives. For instance, it’s great in overnight oat recipes. 

Print
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three glass jars of oat milk, the largest in the center labeled oat milk, the smaller jar on the left labeled chocolate, and the smaller. jar on the right labeled vanilla

How to Make Oat Milk with Protein


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5 from 3 reviews

  • Author: Lindsay Cotter
  • Total Time: 15 minutes
  • Yield: 5 cups 1x
  • Diet: Low Lactose
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Description

Learn how to make oat milk with protein right from your own kitchen for a budget-friendly, nut free, dairy free, and gluten-free milk alternative perfect for all your needs!


Ingredients

Units Scale
  • 1 cup gluten-free old fashioned rolled oats
  • 4–5 cups purified water, cold (See notes) – the less you use the thicker the milk
  • Pinch of sea salt
  • 2 Tablespoons maple syrup or 3 pitted dates

Optional Flavor Mix-Ins: 

  • 1 frozen banana, sliced
    1 Tablespoon unsweetened cocoa powder
    ⅓ cup fresh berries
    2 Tablespoons coconut butter or sunflower butter (to make extra creamy)

 Optional Protein Boosters: 

  • 2–3 scoops (16 – 25 grams) collagen or vegan collagen (unflavored/vanilla/chocolate/etc.)

Instructions

  1. Place the rolled oats and purified water in a blender. Blend on high speed for 30 seconds or until they are broken down into a very fine meal. NOTE -> Blending too long will warm the oats, creating a slimy texture. 
  2. Add sweetener of choice (if using) and salt, and blend again. 
  3. Place a layered cheesecloth or a fine mesh bag in a colander that has been set inside a large bowl. Pour the blended oat mixture over the cloth. Let the liquid drip through. Do NOT squeeze the excess oat pulp through the strainer! This will create a gummy texture. 
  4. If adding sweeteners and flavor mix-ins, place the strained oat milk back in the blender and blend until creamy. For fruit-flavored mix-ins, strain once more to remove any seeds or flesh. If adding protein (collagen), whisk or blend it into milk after sweetening. (See notes)
  5. Divide the milk into mason jars or one large glass jar. Cover and let the oat milk chill for 6-12 hours before using.
  6. Refrigerate for up to 5 days.

Notes

As the protein oat milk sits in the fridge, a small layer of film or separation will rise to the top. This is natural. Just give it a good shake before using it! 

Nutritional Information calculated with 3 scoops of collagen

  • Prep Time: 5 minutes
  • Cook Time: n/a
  • Category: drink
  • Method: blend
  • Cuisine: American

Nutrition

  • Serving Size: 1 cup with protein
  • Calories: 113
  • Sugar: 4.8 g
  • Sodium: 16.6 mg
  • Fat: 0.2 g
  • Carbohydrates: 18 g
  • Fiber: 1.9 g
  • Protein: 6.7 g
  • Cholesterol: 0 mg

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Categories: Blender, Dairy-Free, Drinks, Egg-Free, Gluten-Free, How-To, Nightshade-Free, Nut-Free Tags: baking, dairy free, drinks, gluten free, kid drinks, oat milk

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Lindsay Cotter of Cotter Crunch

About Lindsay

Hi, y’all, I’m Lindsay Cotter, a Nutrition Specialist with a focus on Gluten-Free eating. I love creating delicious nourishing food that anyone can enjoy.

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    Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star

  1. Avatar photoDani

    Sep 01, 2022 at 3:14 AM

    DELICIOUS! A post on making a pumpkin spice flavor would be great!😁

    Reply
    • Avatar photoLindsay Cotter

      Sep 01, 2022 at 9:33 AM

      Great idea!

      Reply
  2. Avatar photoCathy

    Jun 01, 2022 at 6:35 AM

    Used this morning in my coffee and it was fantastic!

    Reply
    • Avatar photoLindsay Cotter

      Jun 01, 2022 at 1:47 PM

      That’s the best way!

      Reply
  3. Avatar photoPaula f

    May 31, 2022 at 12:01 PM

    I’m so excited I found this. I’ve always wanted to make my own and it’s so easy thanks to all of your helpful tips!

    Reply
    • Avatar photoLindsay Cotter

      May 31, 2022 at 2:49 PM

      Keep me posted!! I think you’d love it too Paula.

      Reply

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Lindsay Cotter of Cotter Crunch

About Lindsay

Hi, y’all, I’m Lindsay Cotter, a Nutrition Specialist with a focus on Gluten-Free eating. I love creating delicious nourishing food that anyone can enjoy.

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