Low-Carb High-Protein Peanut Butter Banana Smoothie

A creamy, protein-packed smoothie with fewer carbs—perfect for breakfast, post-workout, or a healthy snack.

Servings: 1 | Prep Time: 5 mins | Total Time: 5 mins
Dietary Badges: Low-Carb, High-Protein,


Ingredients

  • 1/2 ripe banana
  • 2 tablespoons peanut butter (natural, unsweetened)
  • 1/2 cup unsweetened almond milk (or low-carb milk alternative)
  • 1/4 cup Greek yogurt (or unsweetened protein yogurt)
  • 1 scoop vanilla or unflavored whey protein powder (or plant-based protein powder)
  • 1/2 teaspoon vanilla extract
  • Pinch of cinnamon (optional)
  • Ice cubes (as needed)

Instructions

  1. Combine Base Ingredients
    Add banana, peanut butter, almond milk, Greek yogurt, and protein powder into a blender.
  2. Blend Until Smooth
    Blend on high speed until creamy and lump-free.
  3. Add Flavorings
    Add vanilla extract and cinnamon (if using), then blend briefly to combine.
  4. Adjust Texture
    Add ice cubes for a thicker, colder smoothie. Blend until desired consistency is reached.
  5. Serve Immediately
    Pour into a glass and enjoy! Optional: sprinkle with cinnamon or a few chopped nuts.

Tip: Frozen banana chunks make it thicker without extra carbs.


Ingredient Details & Substitutions

  • Banana: Half a banana reduces sugar and carbs. Use fully ripe for sweetness.
  • Peanut Butter: Use natural unsweetened peanut butter. Almond or cashew butter are fine alternatives.
  • Milk: Unsweetened almond, coconut, or soy milk keeps carbs low.
  • Greek Yogurt: Use low-carb or protein yogurt for extra protein.
  • Protein Powder: Whey or plant-based protein boosts protein content.

Substitutions Table:

Ingredient Substitute Options
Banana Frozen half banana or avocado (very low-carb)
Peanut Butter Almond butter, cashew butter, sunflower seed butter
Milk Unsweetened almond, coconut, or soy milk
Greek Yogurt Unsweetened protein yogurt, skyr, or skip entirely
Protein Powder Plant-based protein or collagen peptides

Variations & Serving Suggestions

  • Chocolate Protein: Add 1 tsp cocoa powder for chocolate flavor.
  • Nut-Free Option: Replace peanut butter with sunflower seed butter.
  • Berry Boost: Add 1/4 cup low-carb berries (raspberries, blackberries).
  • Serving: Serve in a shaker bottle for on-the-go breakfast or after gym.

Storage & Make-Ahead Tips

  • Best enjoyed immediately for freshness.
  • Refrigerate up to 24 hours in an airtight container; stir before drinking.
  • Do not freeze—texture may change.

Nutrition Facts (Approximate)

Per Serving:
Calories: 320 kcal | Carbs: 12 g | Protein: 28 g | Fat: 18 g | Fiber: 5 g

Dietary Highlights: Low-carb, high-protein, gluten-free optional, naturally sweetened

Allergens: Contains nuts (peanut butter) and dairy (milk/Greek yogurt)


FAQs

Q: Can I use a whole banana?
A: Yes, but carbs will increase. For low-carb, stick to half a banana.

Q: Can I make it vegan?
A: Use plant-based protein powder, non-dairy milk, and dairy-free yogurt.

Q: Can I prep it in advance?
A: You can prep ingredients but blend right before drinking for best texture.

Q: Can I add more protein powder?
A: Yes, but adjust milk or yogurt to maintain smoothie consistency.


Story & Background

I created this low-carb version to enjoy the creamy, peanut-buttery banana flavor without spiking sugar—perfect for mornings or post-workout recovery. Reducing the banana and adding protein powder makes it satisfying and keeps energy steady. It’s become my go-to high-protein smoothie!


Call to Action

Try this Low-Carb High-Protein Peanut Butter Banana Smoothie today! Share your favorite mix-ins in the comments and let me know how you boost protein while keeping it low-carb.

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