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When I need an easy energy boost, I turn to this flaxseed smoothie. It is protein-powered and healthy fat packed to fill me up and keep me full. It also helps kick my digestion in to gear, which is what I want first thing in the morning.

flaxseed smoothie in a glass next to a jar of flaxseeds.

While this smoothie is a little higher in natural sugar (thank you, date!) it’s also got a lot of fiber which helps break down that sugar. Blend a little longer to breakdown the flaxseed and enjoy this delicious recipe!

Table of Contents
  1. How to Make a Flaxseed Smoothie
  2. Tips on Using Flaxseeds
  3. What is Flax?
  4. Flaxseed Smoothie FAQs
  5. More Fiber-filled Smoothies
  6. Easy Flaxseed Smoothie Recipe

How to Make a Flaxseed Smoothie

My flaxseed smoothie is easy to make, yet don’t skimp on the blend time! If you want a non-gritty smoothie, then you’ll have to blend extra long for this one.

  1. Add all ingredients to the blender. Blend until smooth.
  2. Pour over ice to serve, if you want a refreshingly cool smoothie.

You can use frozen bananas in this smoothie to help cool it down. If you need to watch the natural sugar content, then omit the date as well as make sure your almond butter is unsweetened (and the almond milk!).

Swap the almond butter with any other nut or seed butter you wish to use. You can replace the almond milk with a plant milk of your choice.

4 blender containers, one with just plant-based milk, one with dates and banana on top, then one with flaxseed and one with all the ingredients including vanilla and cinnamon.

Tips on Using Flaxseeds

Start small! I know this recipe only has 1 tablespoon of flaxseed, yet if you don’t normally use them as a smoothie booster, then your body may have an adjustment period. Fiber is great (and necessary!) yet loading your body up with fiber can cause some digestive discomfort.

Try 1 teaspoon and work your way up to using a whole tablespoon.

Flaxseed is also naturally gritty. Even with a high powered blender, it might be hard to completely blend in the flaxseed. One reason I recommend using homemade protein powder is that it is powdered.

The flaxseed is completely ground down along with the hemp and chia to a fine powder. That way it easily mixes into your smoothie with no grit.

ingredients for a smoothie including plant-based milk, flaxseeds, dates, cinnamon, vanilla and almond butter.

What is Flax?

Flaxseed is a crop that is packed with protein, fiber, and healthy fats via omega-3 fatty acids. 1 tablespoon of flaxseed contains 1.3 grams of protein and 1.9 grams of fiber along with 1,597 mg of omega-3 fatty acids.

Omega-3s help control cholesterol and lower inflammation in the arteries which lowers your risk for a heart attack. This lovely little seed may reduce the risk of cancer and help regulate blood sugar. You can find this in most grocery stores, either in the same isle as chia seeds or in the baking section.

Whole vs Ground

While you can use whole or ground flaxseed in smoothies, I use ground flaxseed… no reason to make my blender work harder than it has to! Different brands have different types of ground flaxseed, so choose the one that works best for you.

flaxseed smoothie in a glass topped with flaxseed and cinnamon.

Flaxseed Smoothie FAQs

How much flaxseed should I put in a smoothie?

I recommend adding 1 tablespoon of flaxseed into a 16oz smoothie. Flaxseed may be a superfood, yet you can have too much of a good thing. If you’re new to adding flaxseed to your smoothie, then start with less. You can gradually add more as you get used to it.

Can you put raw flaxseeds in a smoothie?

Yes, though ground flaxseed is easier to blend than whole. I recommend using ground flaxseed in smoothie recipes.

Do flaxseeds make you gain weight?

Many people shy away from ingredients called ‘healthy fats’ yet the body needs healthy fats to break down nutrients in the body. Eating healthy fat will actually be a more natural weight; no need to run from it!

light brown smoothie in a glass cup next to a jar of flaxseed.

More Fiber-filled Smoothies

If you’re ready to get serious about getting enough fiber each day, then add these smoothies to the menu:

Don’t forget to let me know how you liked this flaxseed smoothie! Leave a rating + review below; ask any questions you need to make this smoothie a winner.

4.60 from 5 votes

Easy Flaxseed Smoothie

This is a protein-packed, filling smoothie recipe that's perfect for a quick lunch or post workout pick-me-up. Easily omit the date if you wanna cut back on the natural sugar. Flaxseed is a superfood with fat, protein and fiber; basically a great way to start your day.
Prep: 5 minutes
Total: 5 minutes
Author: Jen Hansard
Course: Beverage, Smoothie
Cuisine: Plant-Based
Serves: 1


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  • Place ingredients into blender and puree until smooth. Add a little extra almond milk, if smoothie is too thick. 
  • Pour into glass and enjoy. Garnish with extra ground cinnamon, if desired.


  • To make extra cold, serve smoothie over ice. 
  • If you want to lower the sugar, omit the date.
  • homemade protein powder has flaxseed in it, so you can swap the flaxseed for 1 serving of Smoothie Boost.
  • Feel free to add 1 cup of spinach and turn this into a green smoothie.


Calories: 356kcal, Carbohydrates: 52g, Protein: 8g, Fat: 15g, Saturated Fat: 1g, Polyunsaturated Fat: 6g, Monounsaturated Fat: 7g, Sodium: 330mg, Potassium: 776mg, Fiber: 10g, Sugar: 32g, Vitamin A: 114IU, Vitamin C: 10mg, Calcium: 405mg, Iron: 2mg
Tried this recipe? Show me!Mention @SimpleGreenSmoothies or tag #SimpleGreenSmoothies!

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  1. i put all of my flaxseeds in a ceramic salt grainder (without the salt). It’s easy to grind exactly what i need each time.

  2. 5 stars
    This smoothie has amazing taste!! This seriously tastes like banana bread batter. I think it may be the protein powder that elevated the sweetness so I only used half a serving.
    Definitely a keeper!

  3. 5 stars
    Great base recipe to riff off of. I subbed mango for banana and added some cocoa. Great way to get your daily flax seed.

  4. Pre ground flaxseed loses some of its nutrient value. It is better to grind a little at a time than buy it already ground. Whole is best if your blender can manage it. In kindness.

  5. 5 stars
    Taste really good. I did not add the date. But I did add spinach and collagen Peptides(Vital Proteins) to the smoothie.

    1. We’re fans of Vital Proteins Collagen Peptides too, Antavia. Great add-in!

  6. I have an old blade coffee grinder that I use first to grind flax when I use it. I haven’t tried this recipe yet, since I just sat down to work on another one I just made, banana, kale, blueberry, and flax. I will add it to my list, though. 🙂

    1. A coffee grinder is the perfect solution for flaxseed. Glad you’re planning to give this one a blend, Deborah!

  7. 5 stars
    I Have never been a fan of bananas and smoothies but I must say I was pleasantly surprised. I had to make a couple of alterations due to not having items. I did not have flax seed so I utilized a hemp seed protein. I also omitted the date and used oatmilk instead. This turned out really good and was very quick which is a plus. This will go on my list of go to smoothies new smoothies..

  8. 3 stars
    Your article does not discuss the need to grind up flaxseed to be able to extract its nutrients. Whole flaxseed may just pass through the gut without being digested properly.

    1. We’ve found that our high speed blenders do a great job of grinding these seeds during the blending process, yet if it works better to grind them before for better digestion – we say go for it! 🙂