The Ultimate Low Calorie Peanut Butter Banana Spinach Smoothie: Your Delicious Path to Healthy Living
As the new year rolls in or whenever you simply crave a fresh start, embracing healthier habits often tops the priority list. And what better way to kick off a journey toward wellness than with a delicious, nutrient-packed, and guilt-free treat? This Low Calorie Peanut Butter Banana Spinach Smoothie is meticulously crafted with just 4 simple ingredients, completely free from added sugars or artificial additives, making it the perfect ally for your health goals. Forget those fleeting New Year’s resolutions; this smoothie is here to make sustained healthy eating an absolute breeze.

Did those delightful holiday cookies linger a bit longer than planned? Or perhaps you’re simply someone who loves indulging in flavorful smoothies that are secretly loaded with healthy greens and rich taste, all without a hefty calorie count? If so, you’ve found your perfect match. This smoothie embodies the vibrant green look of a truly healthy concoction, yet it delights your palate with the luxurious, creamy taste of a decadent, calorie-rich peanut butter banana milkshake. It’s the ultimate paradox: healthy, yet utterly satisfying.
If you’re aiming for a complete dietary reset, consider starting with a refreshing ginger detox drink to cleanse your system, then seamlessly transition into incorporating more nourishing choices like this low calorie peanut butter banana spinach smoothie and our collection of healthy, filling salad recipes. Building sustainable habits starts with enjoyable, wholesome meals, and this smoothie is an excellent cornerstone.
The Secret Weapon: Unlocking the Power of PB2
The true magic behind this smoothie’s incredible flavor and surprisingly low-calorie profile lies in one revolutionary ingredient: PB2. This isn’t just a trend; it’s a game-changer for anyone seeking the rich taste of peanut butter without the traditional fat and calorie load. I discovered this fantastic product at the grocery store a while back, and honestly, I haven’t looked back since. PB2 is essentially roasted peanuts that have been pressed to remove a remarkable 85% of their fat content. This process transforms conventional peanut butter into a versatile powder, making it incredibly easy to blend into smoothies, sauces, and other dishes without altering the texture or flavor negatively.
Just two tablespoons of PB2 contain a mere 45 calories, a stark contrast to the nearly 200 calories found in two tablespoons of traditional peanut butter. What’s even better is that it achieves this without any weird or artificial ingredients. It’s simply peanuts, a touch of salt, and sometimes a hint of sugar (though unsweetened varieties are also available). This means you get all the beloved peanut butter flavor, essential protein, and fiber, but with a fraction of the fat. It truly is a remarkable innovation for healthy eating!
[A little disclaimer: This post is genuinely not sponsored by PB2. I just had to share this incredible find because it makes such a difference in healthy recipes!]

Fueling Your Body, Delighting Your Taste Buds
This wonderfully flavorful smoothie weighs in at only 237 calories, yet it delivers over 14 grams of satisfying protein. This makes it an ideal choice for sustained energy and muscle recovery. Whether you’re blending it as a post-workout refuel or as a quick and healthy breakfast to power through a busy day, this smoothie has you covered. It’s designed to keep you feeling full and energized, preventing those notorious mid-morning slumps or unhealthy snack cravings.
“Fuel up without filling out.” That’s the perfect tagline for this incredible smoothie, because every self-respecting smoothie deserves a catchy motto! This philosophy also perfectly applies to our equally delicious strawberry banana spinach smoothie, proving that healthy can always be incredibly tasty.
The Unsung Hero: Spinach
For many, the idea of adding spinach to a smoothie might evoke images of a grassy, unappetizing drink. But here’s the secret: you absolutely will not taste the spinach in this recipe. The vibrant flavors of peanut butter and banana completely mask its presence, leaving you with a creamy, sweet, and nutty blend. Yet, behind the scenes, the spinach is working its magic, packing in a powerhouse of nutrition:
- Vitamins & Minerals: Spinach is an excellent source of Vitamin K, Vitamin A, Vitamin C, folate, iron, and magnesium. These nutrients are crucial for bone health, immune function, vision, and energy production.
- Antioxidants: Loaded with antioxidants, spinach helps combat oxidative stress in the body, supporting overall cellular health.
- Fiber: Its high fiber content aids digestion and contributes to the smoothie’s satiating properties.
By simply tossing in a cup of fresh spinach, you effortlessly elevate the nutritional profile of your smoothie without compromising on taste. It’s a win-win for your health and your palate!
Banana: The Natural Sweetener and Creaminess Factor
Frozen bananas are the star when it comes to achieving that perfect thick, creamy smoothie consistency, eliminating the need for ice which can dilute the flavor. Beyond their textural contribution, bananas offer:
- Natural Sweetness: They provide a wonderful sweetness that means no added sugar is necessary, keeping the smoothie healthy and wholesome.
- Energy Boost: Rich in carbohydrates, bananas offer a quick and sustained energy release, making them ideal for pre- or post-workout fuel.
- Potassium: An essential electrolyte, potassium supports healthy blood pressure and muscle function.
To ensure you always have frozen bananas on hand, peel ripe bananas, break them into halves or thirds, and store them in an airtight freezer bag. They’ll be ready whenever a smoothie craving strikes!

Customizing Your Smoothie: Liquid Options and More
The base liquid significantly impacts the calorie count and nutritional value of your smoothie. While the recipe suggests unsweetened soymilk for a good protein boost, you have options:
- Unsweetened Almond Milk: To further reduce the calorie count, opt for unsweetened almond milk. Just be aware that this choice will also slightly lower the protein content. It’s a personal preference based on your dietary goals.
- Other Milks: Feel free to experiment with other unsweetened plant-based milks like oat milk or cashew milk, or even traditional dairy milk if it fits your dietary needs.
- Water: For the absolute lowest calorie count, a splash of water can be used, though it might make the smoothie less creamy.
The beauty of smoothies lies in their versatility. Don’t hesitate to customize this recipe to perfectly suit your taste and nutritional needs. Here are a few ideas:
- Add More Protein: If you’re looking for an extra protein punch, consider adding a scoop of your favorite vanilla or unflavored protein powder.
- Boost Fiber & Omega-3s: A tablespoon of chia seeds or ground flax seeds will seamlessly blend in, adding healthy fats and fiber without altering the taste.
- Spice It Up: A pinch of cinnamon or a tiny dash of vanilla extract can enhance the flavors beautifully.
- Sweetness Adjustment: While the frozen banana provides ample sweetness, if your bananas aren’t very ripe or you prefer a sweeter taste, a few drops of stevia or a tiny amount of maple syrup (though this adds sugar) can be added.
Making the Perfect Blend: Tips for Success
Achieving that perfectly smooth, creamy consistency is key to a truly enjoyable smoothie. Here are a few tips to ensure your low calorie peanut butter banana spinach smoothie turns out amazing every time:
- Ingredient Order: Always add your liquid first, followed by softer ingredients like spinach, then the frozen items like banana and PB2. This helps the blades catch everything efficiently.
- Blender Choice: While any blender will work, a high-powered blender like a Nutribullet or Vitamix will give you the smoothest, creamiest result. I personally love using my Nutribullet because it processes ingredients incredibly fine, and it doubles as the cup to go, minimizing cleanup!
- Adjusting Thickness: If your smoothie is too thick, add a little more milk (one tablespoon at a time) until it reaches your desired consistency. If it’s too thin, add a few more frozen banana pieces or a handful of ice (though frozen banana is preferred to avoid dilution).
- Blend Until Smooth: Ensure there are no spinach flecks or banana chunks left. Keep blending until the mixture is completely uniform and creamy.

Low Calorie Peanut Butter Banana Spinach Smoothie
Chef Lindsey
5 minutes
5 minutes
1
Smoothie
Saved
Pin Recipe
Comment
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Ingredients
-
1
cup
unsweetened soymilk -
1
banana
frozen, cut in ½ inch pieces -
2
tablespoons
PB2 -
1
cup
spinach
Instructions
-
Place all ingredients in a blender, Magic Bullet or Nutribullet. I use a Nutribullet because it processes it finer and it’s already in a cup to go!
Notes
You can further slash the calories by using unsweetened almond milk, but you will also forgo some of that filling protein.
Nutrition
Calories:
237
kcal
|
Carbohydrates:
37
g
|
Protein:
14
g
|
Fat:
6
g
|
Saturated Fat:
1
g
|
Polyunsaturated Fat:
3
g
|
Monounsaturated Fat:
1
g
|
Cholesterol:
1
mg
|
Sodium:
209
mg
|
Potassium:
881
mg
|
Fiber:
7
g
|
Sugar:
17
g
|
Vitamin A:
3442
IU
|
Vitamin C:
19
mg
|
Calcium:
347
mg
|
Iron:
2
mg
Snack
American
237
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A Delicious Lifestyle Choice
Incorporating this low calorie peanut butter banana spinach smoothie into your routine is more than just trying a new recipe; it’s about embracing a delicious, simple, and effective strategy for healthier living. Whether you’re dedicated to a New Year’s resolution, aiming for weight management, or simply seeking a more nutritious breakfast or snack, this smoothie delivers on all fronts.
It’s incredibly satisfying, keeps you full, and provides a rich array of vitamins and minerals. The fact that it manages to be so healthy while tasting like a treat is truly its greatest strength. Say goodbye to bland, uninspiring health foods and hello to a vibrant, flavorful, and energizing start to your day or a perfect pick-me-up any time you need it.
So, why wait? Grab your blender, gather these four simple ingredients, and whip up this amazing peanut butter banana spinach smoothie. Discover for yourself how easy and enjoyable healthy eating can be. Your body and your taste buds will thank you!
Don’t forget to experiment with the liquid base or add-ins to make it truly your own. Share your creations and let us know how this smoothie has helped you on your journey to a healthier, happier you!