High-Protein High-Fiber Chocolate Smoothie

If you’ve ever wanted a chocolate smoothie that tastes indulgent but is actually packed with nutrition, this recipe is for you.

This High-Protein High-Fiber Chocolate Smoothie is thick, creamy, naturally sweet, and loaded with plant-based goodness. The secret ingredient? Black beans.

Why You’ll Love This Chocolate Smoothie

  • High in plant-based protein
  • Packed with fiber for fullness and digestive health
  • Naturally sweetened with bananas
  • No added sugar
  • Dairy-free and vegan and WFPB
  • Made with simple pantry ingredients
  • Ready in less than 5 minutes
  • Great for breakfast, snacks, or post-workout recovery

The Secret to a Creamy Chocolate Smoothie

Most chocolate smoothies rely on yogurt, ice cream, nut butter, or added sweeteners for texture and flavor.

This healthy chocolate smoothie uses black beans instead.

Black beans blend beautifully and create a rich, creamy consistency without adding excess fat or sugar. They also boost the protein and fiber content significantly, helping keep you satisfied much longer than a typical fruit smoothie.

Ingredients You’ll Need

Black Beans

One can of black beans adds plant-based protein, fiber, iron, magnesium, and creaminess.

Ripe Bananas

Bananas naturally sweeten the smoothie and help create a thick, milkshake-like texture.

Unsweetened Cocoa Powder

Provides rich chocolate flavor along with antioxidants known as flavanols.

Unsweetened Soy Milk

Soy milk is one of my favorite plant-based milks because it contains more protein than most other dairy-free options.

Ice

Makes the smoothie thick, cold, and refreshing.

Nutritionist Notes

As a Plant-Based Nutrition Specialist, I recommend building meals and snacks around fiber whenever possible. Most people focus on protein but forget that fiber plays a major role in gut health, blood sugar control, cholesterol management, and long-lasting fullness.

This smoothie naturally combines:

  • Plant protein from black beans and soy milk
  • Fiber from black beans and bananas
  • Antioxidants from cocoa powder
  • Complex carbohydrates for energy

The combination helps create a balanced smoothie that supports steady energy without the crash that often follows sugary breakfast drinks.

Variations and Substitutions

One of the best things about this High-Protein High-Fiber Chocolate Smoothie is how flexible it is. Here are some easy ways to customize it:

Make It Higher in Protein

Add 1 scoop of your favorite plant-based protein powder for an extra protein boost.

Add More Fiber

Blend in 1 tablespoon of chia seeds, ground flaxseed, or hemp hearts.

Make It Extra Chocolatey

Add 1–2 tablespoons of cacao nibs or a square of dark chocolate before blending.

Swap the Beans

Black beans work best because of their mild flavor, but you can also use cannellini beans or great northern beans and even chickpeas for a lighter-colored smoothie.

Use Frozen Bananas

Replace the ice with frozen bananas for an even thicker, creamier, milkshake-like texture.

Change the Milk

Unsweetened soy milk provides the most protein, but almond milk, oat milk, or cashew milk, can also be used.

Add Greens

Blend in a handful of spinach for extra nutrients. The chocolate flavor easily hides it and you will never see it!

Naturally Sweeten It

If your bananas aren’t very ripe, add 1–2 Medjool dates or a small amount of date paste.

Add Healthy Fats

Blend in 1 tablespoon of almond butter, peanut butter, or tahini for extra creaminess.

Turn It Into a Smoothie Bowl

Use frozen bananas and reduce the milk slightly. Pour into a bowl and top with berries, granola, cacao nibs, coconut flakes, or sliced bananas. So good!

Frequently Asked Questions

Can you taste the black beans?

Tiny bit. The banana and chocolate pretty much mask the flavor.

Can I use another plant milk?

Yes, but soy milk provides the most protein. Almond milk, oat milk, or cashew milk will also work.

Is this smoothie good for weight loss?

Because it’s high in fiber and protein, many people find it helps keep them fuller longer compared to lower-protein smoothies.

Can kids enjoy this smoothie?

Absolutely. My own kids love it and have no idea there’s a can of beans inside.

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High-Protein High-Fiber Chocolate Smoothie

Melissa Champagne
This rich, chocolatey smoothie tastes like a milkshake but is packed with plant-based protein, fiber, and nutrients. The black beans add creaminess without changing the flavor, while the bananas provide natural sweetness. It’s a simple, filling breakfast or snack that will keep you satisfied for hours.
No ratings yet
Prep Time 5 minutes
Total Time 5 minutes
Course Breakfast, Post-workout, Snack
Cuisine American
Servings 2
Calories 157 kcal

Ingredients
  

  • 1 15oz can black beans drained and rinsed
  • 2 bananas
  • 2 tbsp unsweetened cocoa powder
  • 1 cup ice
  • 1 cup unsweetened soy milk

Instructions
 

  • Drain and rinse the black beans well.
  • Add the black beans, bananas, cocoa powder, ice, and soy milk to a high-speed blender.
  • Blend until completely smooth and creamy.
  • Taste and adjust thickness by adding a little more soy milk if desired.
  • Serve immediately.

Notes

Freeze the bananas beforehand for an even creamier texture.
Best to drink right away!

Nutrition

Calories: 157kcalCarbohydrates: 32gProtein: 16gFat: 3gSaturated Fat: 1gPolyunsaturated Fat: 1gMonounsaturated Fat: 1gSodium: 55mgPotassium: 646mgFiber: 6gSugar: 15gVitamin A: 327IUVitamin C: 10mgCalcium: 167mgIron: 2mg
Keyword banana, black beans, chocolate
Tried this recipe?Let us know how it was!

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