Gut-Healthy Banana Berry Smoothie | FoodByMaria Recipes


The Everyday Banana-Berry Anthocyanin Beverage

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5 minutes



This easy banana berry smoothie recipe is full of gut-loving nutrients that'll keep your digestive health on-track while tasting delicious.

This month I am working with my friends over at Seed to help bring information to you around the role diet plays in the health of your gut and microbiome. I’m going to show you how to make an easy Everyday Banana-Berry Anthocyanin Beverage (aka in simpler form: a banana berry smoothie) that uses accessible ingredients found on the Periodic Table of Microbiome-Friendly Foods. What does this mean? More on that below, but just know that this smoothie is perfect for your digestive and overall health. Now let’s dive in—

Container of Seed probiotics next to glass
Maria putting ingredients in blender for a healthy smoothie

Why you’ll love this banana berry smoothie: 

  • Quick & Easy: A smoothie shouldn’t be a chore to make. This recipe takes only 5-minutes to make
  • Simple Ingredients: To eat healthy, you don’t always need complicated ingredients. This recipe will only require 5 ingredients to whip up
  • Healthy: This smoothie is loaded with gut-friendly and healthy benefits like Anthocyanins, and Flavonoids (more about those fancy words below)
  • Make it in Bulk: Make this delicious smoothie in bulk so you have it ready to-go on busy mornings or for a quick mid-day snack. Your smoothie should last in your fridge or freezer for a couple of days

Ingredient Notes & Health Benefits:

This banana berry smoothie uses the science behind healthy ingredients to deliver a delicious smoothie that is good for you and for your gut microbiome. Some of the shining stars to this smoothie and health benefits are: 

Blueberries: Blueberries have a type of polyphenol in them which gives them the beautiful blue color. These have a number of health promoting effects, including antioxidant effects. 

Bananas: Bananas are always a go-to for smoothies to add a great consistency and polyphenols, which can help with lowering blood sugar levels, risk of heart disease, can protect you against cancer, and the list goes on.

Flavonoids: This is a fancy word for a group of polyphenols which are found in plant foods like the ones in this smoothie. Flavonoids have beneficial anti-inflammatory effects and help protect your cells from damage that can lead to disease. 

Microbiome: I know, there’s a lot of scientific words in this post but bare with me as I educate you on their goodness for our bodies. The human microbiome is a community of 38,000,000,000,000 (that’s 38 trillion) microorganisms, mostly bacteria, living in and on your body. The genes harbored in these trillions of microbial cells are essential for human development, immunity, and nutrition. There is a close relationship between what we eat and our gut microbiome, which means that we can improve our health by modifying our diet. No surprise there, right? This simple recipe is a great example of how to incorporate healthy, gut-loving nutrients into your diet.

How to make this banana berry smoothie:

Blueberries being added to blender for banana berry smoothie

Spinach being added to blender for banana berry smoothie

Peanut butter added to blender for banana berry smoothie

Milk being added to blender for banana berry smoothie

This is a simple one. First you want to grab your ingredients: 

  • Your favorite plant-based milk 
  • Frozen blueberries
  • Handful of spinach 
  • Peanut butter (or your fav nut butter) 
  • Frozen banana

Then all you are going to do is throw all these ingredients into a blender, blend until smooth, and enjoy!

Ingredients in a blender for banana berry smoothie

Smoothie being blended up in a blender

Smoothie being poured into a glass


How else do you keep your gut health in-check? If you follow me on social, you know I don’t shy away from talking about poop! My gut health is so important to me, and aside from eating/drinking healthy foods and recipes like this smoothie, I also am a big probiotics fan. I’m a big fan of Seed’s Daily Synbiotic as it combines 24 clinically-and-scientifically studied probiotic strains that you can’t find in foods like yogurt or fermented foods. Beyond digestive health, these probiotics support: 

  • Heart health 
  • Skin health
  • Gut immune function 
  • Gut barrier integrity
  • Micronutrient synthesis

Maria dumping a Seed probiotic into her hand

What is the best plant-based milk to use in smoothies? There is such a huge shift to plant-based milks these days with so many options out on the market. There are a lot of arguments around what’s the healthiest, what’s the most eco-friendly, and what tastes the best, however, I recommend that you use whatever you like the best. You can learn more about the benefits of each milk on the market here.

Do you have to freeze your fruit? For smoothies you do not need to freeze your fruit, however, frozen fruit adds a better texture in my opinion and allows your smoothie to be nice and cold. Not only does it allow a great texture, but there are several studies that show frozen fruit (and vegetables) can have more antioxidants such as vitamin C, polyphenols, beta carotene, and lutein, compared to fresh. Not to mention that frozen fruit lasts longer ;)!

Jar of Seed probiotics on counter next to flowers

Use code FOODBYMARIA for 15% off your first month’s supply of Seed’s Daily Synbiotic. And be sure to follow @Seed for more information throughout the month of May on the importance of nutrition (🥦🍓🍠) and digestion (💩).

Other healthy recipes you’ll love:

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The Everyday Banana-Berry Anthocyanin Beverage

4.84 from 6 votes
This easy banana berry smoothie recipe is full of gut-loving nutrients that'll keep your digestive health on-track while tasting delicious.
Prep Time 5 minutes
Total Time 5 minutes
Course Smoothie
Cuisine American
Servings 1
Calories 184 kcal


  • 1 cup plant milk of choice
  • 1/2 cup frozen blueberries
  • large handful of spinach
  • 1 tbsp. peanut butter
  • 1 banana frozen, chopped

Variation: purple sweet potato blueberry smoothie (serves 2)

  • 1 scoop Ritual Protein Powder (Vanilla)
  • 1 cup frozen blueberries
  • 1/2 cup steamed purple sweet potato
  • 1 small banana
  • 2 heaping tbsp peanut butter
  • 3 cups soy milk or other milk of choice
  • 1 tsp cacao
  • 1/4 cup canned or cooked chickpeas
  • Optional: handful of spinach
Shop Ingredients on Jupiter


  • Blend all of the smoothie ingredients in a high-speed blender until fully combined. Pour into a glass and enjoy!

Variation: purple sweet potato blueberry smoothie

  • Steam the sweet potato. Blend the Ritual protein powder, steamed sweet potato, frozen blueberries, banana, peanut butter, cacao and chickpeas in a high-speed blender until fully combined. Pour into two glasses and enjoy!


YouTube video


  • Sweet potato can be steamed ahead of time and then frozen in portions to make smoothie-making a breeze!
  • If desired, use almond butter instead of peanut butter.


Serving: 1 | Calories: 184kcal | Carbohydrates: 16.9g | Protein: 6.5g | Fat: 11.5g | Polyunsaturated Fat: 2.8g | Sodium: 278.6mg | Fiber: 3.2g | Sugar: 9.2g
Review This Recipe Let us know how it was!

Yum yum yum
I’ve been having protein smoothies most mornings for a few years but never thought to include peanut butter! 💡 thank you

Maria Koutsogiannis

you’re so welcome!! did you try this!?


5 stars

Maria Koutsogiannis

thank you so much, whitney!


5 stars
Thank you so much for this recipe, Maria!! it was so easy!

Maria Koutsogiannis

you’re so welcome, raquel!!!


5 stars
This has to be one of the best smoothies I have ever tasted!
So, I put in frozen blueberries and yours look thawed…?

Maria Koutsogiannis

I highly suggest frozen!! Ours were thawed looking because of the photo shoot!

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