This is my favorite kefir smoothie to make to use up milk kefir. It’s packed with healthy berries, greens, nut butter, and collagen protein.
I’ve always been transparent about the fact that breakfast is not my favorite meal of the day. Even though I do work from home, if something takes more than 5 minutes of my time to make, I’m not going to take the time to do it. That’s why this kefir smoothie is perfect for me to whip up on a busy morning or for a fast snack!

post may contain affiliate links which means that I may receive a small commission, but your price stays the same.
If I don’t have overnight oats prepared (another great recipe for using up milk kefir) I’m headed straight for my blender. I have always been a big fan of smoothies becuase you can take them on the go!
If you’re anything like me, after you wake up and go through your morning routine, you hit that ground running. Who has time to fry eggs, saute vegetables or flip pancakes on a griddle Monday-Friday?
I love this smoothie because it’s so good for me. It meets all of my breakfast goals: protein, greens (fiber + veggies), potassium (sore muscles), healthy fats, and probiotics. Seriously, what more could you be asking for?
I usually drink this whole recipe by myself, but sometimes I’ll make it and split it between Jared and I for a light snack!

What is milk kefir?
Kefir milk or milk kefir is really just fermented milk. It sounds kind of funny if you haven’t tried it, but it’s really just very tangy, not rancid or rotten tasting at all. Honestly, it kind of tastes like tart, drinkable yogurt. Most kefir milk is fermented with kefir grains which are a certain type of culture. It’s very probiotic-rich so it’s great for your gut.
I like whole, cows milk kefir but many people also drink goat or sheep’s kefir. As I said, it is thicker than milk, it gets that way during the fermentation process. After the first fermentation, you can flavor it with fruit, sugar or flavors, or just use it plain after the first ferment. That’s what I usually do. Learn how to make your own at home here!
Is it good for you?
There are so many benefits from eating fermented foods. Mainly because of the probiotics that naturally occur from using a culture. I eat kefir to support my immune system and aid in digestion. The milk is also rich in calcium and protein, so I love adding it to my diet.
Sometimes, I can be sensitive to straight dairy products, but I’m never bothered by fermented dairies like kefir or yogurt.

How do you make a smoothie with milk kefir?
Like I said, I’m usually working with plain milk kefir, which I like here because I like to keep my smoothies as low in sugar as possible. Flavored kefir has more sugar, especially if you’re using store-bought.
All you need to do is add your smoothie ingredients to a blender and let it do the rest for you. My favorite things to add are:
- Frozen, mixed berries
- Frozen banana
- Fresh spinach
- Almond butter (or nut butter of choice)
- Collagen or whey protein (I like this brand and this brand of collagen and this brand of protein)
- Plain kefir
My exact recipe is below in the printout!

Love milk kefir? Learn how to make yours at home!
Print
Favorite Kefir Smoothie | With Berries & Greens
This is my favorite kefir smoothie to make to use up milk kefir. It’s packed with healthy berries, greens, nut butter, and collagen protein.
- Prep Time: 5 minutes
- Total Time: 5 minutes
- Yield: 1–2 smoothies (about 16 oz) 1x
- Category: Smoothie
- Method: Blender
- Cuisine: American
Ingredients
- 1 and 1/2 cup frozen, mixed berries
- 1/2 frozen banana
- 1 cup fresh spinach
- 1 Tbsp. almond butter
- 1 scoop collagen or protein powder of choice
- 1 – 1 and 1/2 cups plain milk kefir (depending on how thick you like your smoothies)
Instructions
- Add all of the ingredients to a blender. Start by just adding one cup of milk kefir and add more if you want a thinner smoothie.
- Blend until completely smooth. Pour into a glass and serve!
Nutrition
- Serving Size: 8 oz.
- Calories: 214
- Sugar: 19 g
- Sodium: 101 mg
- Fat: 6 g
- Saturated Fat: 1 g
- Unsaturated Fat: 0 g
- Trans Fat: 0 g
- Carbohydrates: 29 g
- Fiber: 4 g
- Protein: 14 g* (depending on protein)
- Cholesterol: 5 mg
Keywords: kefir, smoothie, milk kefir, fermented foods
Hello Allie, that smoothie looks really great, but I have a question. What can I use to substitute frozen banana that will provide me more or same nutritional benefit & sweetness? Thank you!