This keto smoothie recipe tastes great and provides good fats, lots of protein, and big flavor, all in one glass. Better yet, the recipe comes together in less than 5 minutes, and it’s sugar-free! It’s a great quick and filling breakfast or snack! 

close up of a glass full with green smoothie
Want to save this recipe?
Just enter your email and get it sent to your inbox! Plus you’ll get new recipes from us every week!

Ingredients to make this Green Keto Smoothie

  • Avocado — peeled and pitted. I like using Hass avocados as they’re more flavorful. Avocados are such a great addition as they are super creamy.
  • Spinach or your favorite leafy greens be sure to wash the greens beforehand, even if they’re advertised as pre-washed.
  • Unsweetened coconut milk or coconut water –I think these are the two best liquids to use in a green smoothie recipe. You can use any dairy-free milk you prefer.
  • Sugar-free vanilla protein powder — check out the recipe card down below for a link to my favourite one. You can also use a protein powder that contains monk fruit if you prefer.
  • Peanut butter powder —I really love and highly recommend PB2. You can also add some flaxseed if you have it on hand.
  • Freshly squeezed lemon juice — I don’t recommend using bottled lemon juice as there are preservatives.
  • Optional berries – Since berries are lower in carbs, add some frozen or fresh strawberries or blueberries if you prefer. 
  • Top your smoothie with fresh mint and some blueberries.
green breakfast smoothie in short juice glass

What is good in keto smoothies

I love this green smoothie recipe just the way it is, but here are some other low-carb ingredients you may want to add to your green protein smoothie.

Tips to keep your smoothie fresh

The best time to consume this smoothie is directly after making it. Everything is still fresh, cold, and well combined.

However, if you want to drink it later, a protein green smoothie can be stored in the refrigerator for 24 hours. Store it in an airtight container, not your blender. Fill the container to the very top to keep any air out. Otherwise, the smoothie can pick up odors from nearby foods.

Keto Smoothie Shake

Be sure to check for unsweetened protein powder, as you don’t want to add artificial sweeteners and other fillers to the smoothies.

green protein shake topped with fresh blueberries and sprig of mint

Fresh or frozen ingredients?

You can use fresh or frozen avocados and spinach for this green smoothie. It is definitely more budget-friendly and time-efficient to use frozen ingredients as you don’t have to wait for the avocado to ripen and risk the spinach going bad before the avocado ripens!

There’s no need to thaw the frozen ingredients before blending them, like in my Mango Green Smoothie or Easy Apple Smoothie Recipe. Some frozen fruit, like berries, is good to add to your smoothie. I love the mild sweetness of the berries, and they are low-carb friendly.

It’ll definitely keep your smoothie cool and make the smoothie thicker, making it the perfect refreshing summer drink.

More Smoothie Recipes to Try

Low Carb Green Smoothie

3.65 from 163 votes
Author: Olivia Ribas
Servings2 People
Prep Time5 minutes
Cook Time0 minutes
Total Time5 minutes
This low-carb green smoothie tastes great and provides good fats, lots of protein, and big flavor, all in one glass. Better yet, the recipe comes together in less than 5 minutes!

Video

Save this recipe
Enter your email and we’ll send it to you. Plus, you’ll get recipes & tips every week!

Ingredients 
 

  • 1 medium avocado peeled and pitted
  • 1 cup spinach
  • 1 1/2 cups unsweetened coconut milk
  • 1 scoop of sugar-free vanilla protein powder I really recommend this one (It's my favorite and tastes really good)
  • 1 tbsp peanut butter powder I really love and recommend this one from Naked.
  • 1 tbsp freshly squeezed lemon juice
  • 4 ice cubes  optional
  • Some mint leaves

Instructions 

  • Add all the ingredients to a blender and puree for about 30 seconds.
  • Taste to adjust flavor and serve immediately.

Notes

  • You can use frozen avocado instead of fresh avocado.
  • The ice cubes will help the smoothie thicken. Skip them if you want the smoothie to be thinner.

Nutrition

Serving: 1/2, Calories: 168kcal, Carbohydrates: 7g, Protein: 6g, Fat: 14g, Cholesterol: 1mg, Sodium: 84mg, Potassium: 480mg, Fiber: 7g, Sugar: 1g

Nutrition information is automatically calculated, so should only be used as an approximation.

Did You Make This?

Follow @primaverakitchen on Instagram, snap a photo, and tag it #primaverakitchen. We’d love to see your recreation.

Olivia Ribas

Welcome

Hi, I'm Olivia


I’m so glad you’re here! For over 11 years, I’ve been sharing tasty, easy-to-make recipes on Primavera Kitchen. Now, you’ll find more than 700 delicious recipes—chicken, salmon, and pork chops are some of the most popular—perfect for quick dinners and everyday family-friendly cooking with fresh ingredients.

Explore More

3.65 from 163 votes (159 ratings without comment)

Leave a comment

Your email address will not be published. Required fields are marked *

Rate This Recipe:




This site uses Akismet to reduce spam. Learn how your comment data is processed.

26 Comments

  1. Jennifer Wheatley says:

    Can frozen avacado be used? Thanks!

    1. Olivia Ribas says:

      Oh yes, avocados freeze brilliantly 😉

  2. JANE says:

    Many thanks…I have just signed up and found some awesome low carb smoothie recipes….gonna gave a look now at the recipe book….thanks again….Jane

    1. Olivia Ribas says:

      You’re very welcome!

  3. Rosie says:

    Are you using coconut milk that comes in a can or in a carton?

    1. Olivia Ribas says:

      In a carton!

  4. celeb networth says:

    The smoothie looks so smooth! Thank you for the recipe! I will definitely try this very soon!

    1. Olivia Ribas says:

      You’re very welcome.

  5. Maria D says:

    Why wouldn’t you consider Vega protein keto friendly? I have been using it but needs to know if i need to stop it..

  6. Maria D says:

    Vega protein has 4 gr of carbs. Please I would like to know why you don’t consider it keto. Thank you

    1. Olivia Ribas says:

      You are totally right, Maria. This is a keto friendly powder and we just fixed that on the post.

  7. Denise Southard says:

    Can I use peanut butter instead of powdered?

    1. Olivia Ribas says:

      Yes you can!

  8. suzanne mitchell says:

    how long will a smoothie last frozen to drink later?

    1. Olivia Ribas says:

      About 3 months!

  9. Christine says:

    Does it taste OK with no ice? Most smoothies I see it says to add ice to the blender.

    1. Olivia Ribas says:

      Yes it does if you use a milk that was in the fridge. You can add 3 cubes of ice if you prefer.

  10. Jessica Gordon says:

    It’s delicious! Just wondering how to make a smoothie more filling. 

    1. Olivia Ribas says:

      Add more avocado. If you don’t follow low carb diet, you can add also a banana.

  11. Emmalee Walker says:

    Hello! Would this technically have 0 net carbs? 7g Carbs – 7g Fiber = 0 net carbs

  12. Dianne says:

    I am new at making smoothies, when you talk about coconut milk, is that in a carton or can?

    1. Olivia Ribas says:

      It’ a carton.

  13. Samantha Dominguez says:

    Taste really bad!!!

    1. Olivia Ribas says:

      This recipe tastes really good, but if you don’t use a good keto protein powder, it can alter the flavor of this smoothie.

  14. Dan Hemmert says:

    I make this frequently and really enjoy it. On almost every smoothie I make I add an egg for extra protein. I may also add some carrots. Good stuff!

    1. Olivia Ribas says:

      Thank you!