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I get asked all the time about how to increase fiber in green smoothie recipes. You can only add so much spinach or kale before you’re over it. So I thought, “Why don’t we make fiber smoothie cubes?” So these fun + simple frozen smoothie cubes are loaded with fiber and protein to fuel your day and keep you regular.
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How To Use Fiber Smoothie Cubes
The other recipes in my smoothie cubes series include directions for substituting a portion of fruit in a recipe with the cubes. This one is a little different in that it is designed to be used as a replacement for all the fruit in the recipe and blended with your choice of liquid and leafy greens, if desired. If you need a new blender, I like these smoothie blenders the best.
You can add it to a fruit smoothies, tropical smoothies, weight loss smoothies, or green smoothies, but it will do the job by itself as a meal replacement. Add a banana or another pitted date for added sweetness. If you’re new to smoothies, check out my how to make a smoothie guide for more tips.
Ingredients You’ll Need
- Almond milk: The smooth, neutral base that helps everything blend easily. You can make almond milk or pick from almond milk brands that me and my team have vetted.
- Chia seeds: Create the gel texture and deliver soluble fiber for fullness. Want more chia goodness? Check out my collection of chia seed recipes.
- Hemp hearts: Add plant-based protein and healthy fats without changing the flavor.
- Psyllium husk powder: The digestive powerhouse that boosts fiber and gut support.
- Medjool dates: One of my favorite natural sweeteners that also adds trace minerals to the cubes.
- Cacao powder: Gives a rich chocolate flavor with antioxidants, no added sugar. Explore my other cacao powder recipes to use up the bag.
This fiber smoothie cubes recipe below isn’t just an excuse for a chocolate fix. These cubes are full of fiber + protein, 2 vitally important nutrients for your body. Let’s learn more!
November 9-13, 2026
Jen’s Free Soup Challenge
I’d love for you to soup it up with me! For 5 days, I’ll send you a daily veggie-packed soup that’s easy enough for a busy weeknight and makes enough to freeze and pull out all winter.
The Importance of Fiber and Regularity
Staying “regular” is a top priority for most of us, or at least it should be! Fiber works like little scrubbing brushes on the inside of the digestive tract. It adds bulk and keeps things moving along when in proper balance. Regularity is a sign that the body is working like it’s supposed to, using the nutrients consumed and ridding itself of waste or excess.
Please note that “regularity” is the ideal situation.
There are a lot of conditions, medications, and situations where regularity is really difficult to achieve. See your health practitioner for specific recommendations if constipation, diarrhea or bloating, as well as excess gas are an ongoing problem for you.
Another trick to staying regular is to make sure you’re consuming enough food, preferably moderately high or high in fiber, at regular intervals. Skipping meals or eating too little (such as with fasting, dieting, calorie-dense but low-volume foods) can contribute to irregularity. In any case, it is super important to make sure your body is getting enough fiber and that your digestive tract is humming along.
What Else Can I Add to My Smoothie for Fiber?
Plants are the only source of fiber. Chicken, beef, fish, pork, eggs, and other animal products contain 0% fiber. Plants are made up almost entirely of fiber along with water, fats, and starches. Fiber itself is essentially just a carbohydrate. Dietary fiber cannot be broken down by digestive enzymes.
Here are some ways to add fiber into your smoothies:
- dark leafy green vegetables
- whole fruits (not juice)
- psyllium husk powder
- hemp powder
- banana
- chia seeds
- fiber smoothie cubes
- pears
- strawberries
- avocado
- apple
- raspberries
More Smoothie Cube Recipes
Each one of these recipes is designed to be frozen in an ice cube tray, then stored in the freezer until you’re ready for a plant powered boost. I usually keep 2 or 3 different kinds of smoothie cubes on hand, so that I don’t need to rush around finding ingredients at a moment’s notice. Here are my fav smoothie cubes:
- Antioxidant smoothie cubes– Use these when in need of a beauty boost. Just replace the fruit in your next smoothie with 4 cubes.
- Alkaline veggie smoothie cubes– These provide a green veggie boost. Replace the leafy greens in your next smoothie with 4 of these cubes.
- Electrolyte smoothie cubes– When you think of these cubes, think of an energy boost. No matter the workout, big or small, you need to be replacing your electrolytes. These cubes do just that!
- Coconut milk smoothie cubes– These are healthy fat bombs of goodness. Add some of these cubes to your next smoothie, and watch your hair shine, as well as your skin.
- Anti inflammatory cubes- Just like the name suggests, these blender bombs are loaded with veggies. These can easily be added to any smoothie (tropical flavors are the most complimentary!).
Now let’s get blending with these fiber smoothie cubes. Once you’ve tried them, leave a comment and review so I know how they worked for you. For more plant-based recipes and exclusive extras, sign up for my weekly recipe newsletter.
Recipe Card
Fiber Smoothie Cubes
Ingredients
- 4 cup almond milk plus more if needed
- ½ cup chia seeds
- 1 cup hemp hearts
- 8 tsp psyllium husk powder
- 4 tbsp cacao powder
- 8 medjool dates pitted
- 2 tsp pure vanilla extract
- sea salt, unrefined
Instructions
- In a bowl, stir the chia seeds into some of the almond milk. Let sit for 10 to 15 minutes to form a gel.
- Pour the chia gel into a blender. Add the remaining almond milk, hemp hearts, psyllium, cacao powder, dates, vanilla and a pinch of salt. Blend until smooth, adding a little more almond milk if needed; the mixture will be very thick, like pudding.
- Spoon into two standard 16-well ice cube trays. It’s fine if the mixture rises above the wells, as long as it stays within the trays.
- Freeze overnight or until completely solid. Pop out the cubes and store in an airtight, freezer-safe container for up to 2 weeks, or a little longer in a deep freezer.
- To use, blend the cubes with your choice of liquid and leafy greens until smooth. If it isn’t sweet enough, add some ripe banana or a little maple syrup to taste.
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Recipe Notes
- Date Tip: If your dates are dry or firm, soak them in hot water for 10 minutes so they blend smooth.
- Sweetener Swaps: Replace the dates with pure maple syrup to taste, or use 2 medium bananas in place of the 8 dates. More options in this guide to natural sweeteners.
- Texture Tip: The mixture thickens quickly as the chia and psyllium set, so spoon it into the trays right after blending.
- Freezing: Store the cubes in an airtight, freezer-safe container for up to 2 weeks, or a little longer in a deep freezer. Blend them with plenty of liquid, since the chia and psyllium make a very thick smoothie.
Nutrition
Saturated Fat: 1 g | Polyunsaturated Fat: 3 g | Monounsaturated Fat: 1 g | Trans Fat: 1 g | Sodium: 41 mg | Potassium: 62 mg | Sugar: 4 g | Vitamin A: 43 IU | Vitamin C: 1 mg | Calcium: 68 mg | Iron: 1 mg
Are the nutrition facts for 1 cube or 4 cubes?
Hi Mary! It’s for a 4 cube serving.
Hey! Made these these this morning for the fridge!! And just made a smoothie with the leftovers. YUM!!!! In step #5 what does this mean? “add 4 protein + fiber cubes” How many cubes do I add when making the smoothie? And I am really intrested in the protein you have linked looks like amazing ingredients!!! Thanks so much for such an inspiring blog! Next – tumeric bombs!!!