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.
More Healthy Smoothie Recipes You’ll Love




High-Protein High-Fiber Chocolate Smoothie
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.
