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

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 high in healthy fats, fibre, full of vitamins and nutrients.
- Spinach or your favorite leafy greens — be sure to wash the smoothies beforehand, even if they’re advertised as pre-washed. Do not skip this ingredient if you want that boost in nutrients and fiber. Spinach is full of antioxidants as well as vitamins. Spinach is full of antioxidants as well as vitamins and nutrients as well.
- Unsweetened coconut milk or coconut water –I think this 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 freeze or fresh strawberry or blueberries if you prefer.
- Top your smoothie with fresh mint and some blueberries.

What is good in keto smoothies
I love this healthy 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.
- Kale
- Basil
- Microgreens
- Almond milk
- Flax seed
- Chia seeds
- Fresh or frozen berries
- Kiwi fruit
- Nut butter
- Flavored extracts, such as mint, vanilla, or almond
- Peanut butter powder
- Matcha powder
- Sugar-free Greek yogurt
- Fresh ginger and even turmeric to add extra flavor.
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
- Perfect Keto – This one is my favorite cause it’s gluten-free, dairy-free and it uses clean ingredients. There is not junk fillers.
- Vega Sport Premium Protein – This one is dairy-free, vegan and vegetarian too. It’s Keto friendly too because 1 scoop has only 5g of carbs.
- Vega Protein & Greens Vanilla – This is vegan too and there is no soy. The flavour is good too. This is keto friendly too because it 1 scoop has only 4g of carb.
- Soy protein powder will help to build bone mass and is particularly helpful in older adults.
Be sure to check for unsweetened protein powder as you don’t want to add artificial sweeteners and other fillers to the smoothies.

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 goes 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 are good to add in your smoothie. I love 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
- Peach Green Smoothie Recipe
- Pineapple Green Smoothie
- Pomegranate Green Smoothie
- Cherry Pineapple Smoothie Recipe
- Peach Carrot Smoothie Recipe

Low Carb Green Smoothie
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Video
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.
Tips
- 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 Information
Nutrition information is calculated using an ingredient database and should be considered an estimate.
S
Jennifer Wheatley says
Can frozen avacado be used? Thanks!
Olivia Ribas says
Oh yes, avocados freeze brilliantly 😉
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
Olivia Ribas says
You’re very welcome!
Rosie says
Are you using coconut milk that comes in a can or in a carton?
Olivia Ribas says
In a carton!
celeb networth says
The smoothie looks so smooth! Thank you for the recipe! I will definitely try this very soon!
Olivia Ribas says
You’re very welcome.
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..
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
Olivia Ribas says
You are totally right, Maria. This is a keto friendly powder and we just fixed that on the post.
Denise Southard says
Can I use peanut butter instead of powdered?
Olivia Ribas says
Yes you can!
suzanne mitchell says
how long will a smoothie last frozen to drink later?
Olivia Ribas says
About 3 months!
Christine says
Does it taste OK with no ice? Most smoothies I see it says to add ice to the blender.
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.
Jessica Gordon says
It’s delicious! Just wondering how to make a smoothie more filling.
Olivia Ribas says
Add more avocado. If you don’t follow low carb diet, you can add also a banana.