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Thick, creamy high protein peanut butter smoothie in a tall glass, garnished with crushed peanuts and a straw.

Easy High Protein Peanut Butter Smoothie

myrecipe
This high protein peanut butter smoothie is a quick, nutrient-rich blend designed to keep you feeling full and energized. Perfect for a speedy breakfast or a satisfying post-workout drink, it's creamy, delicious, and ready in minutes.
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Prep Time 5 minutes
Resting time 3 minutes
Total Time 8 minutes
Course Beverage, Breakfast, Snack
Cuisine American
Servings 1 glass
Calories 400 kcal

Equipment

  • Blender

Ingredients
  

  • 1 cup oat milk
  • 1 frozen banana
  • 2 tablespoons creamy peanut butter
  • 1/4 cup uncooked rolled oats
  • 1 tablespoon ground flax seeds
  • 1 scoop unflavored protein powder
  • 1/2 teaspoon cinnamon
  • Ice cubes (optional)
  • Crushed peanuts (optional, for garnish)
  • Chia seeds (optional, for garnish)

Instructions
 

Building the Base

  • Pour 1 cup of oat milk into your blender.
  • Add 1/4 cup of uncooked rolled oats, 1 scoop of unflavored protein powder, 1 tablespoon of ground flax seeds, and 1/2 teaspoon of cinnamon to the blender.

Adding the Creamy Elements

  • Add 2 tablespoons of creamy peanut butter and 1 frozen banana to the blender. If using, add ice cubes now.

Blending to Perfection

  • Secure the lid and blend on high speed for 45 to 60 seconds, until completely smooth with no visible oat or banana pieces.
  • Check the consistency. If too thin, add more frozen banana or ice cubes. If too thick, add a splash more milk and blend for another 10 seconds. Adjust sweetness with a soft date or maple syrup if desired.

Serving

  • Pour your blended smoothie into a tall glass and enjoy immediately. Garnish with crushed peanuts or chia seeds, if desired.

Notes

Pro Tip for Creaminess: Using a frozen banana is key for a thick, creamy, and chilled smoothie without watering it down. Keep sliced ripe bananas in your freezer for convenience.
Ingredient Substitutions: Natural, creamy peanut butter without added sugars or oils is recommended, but peanut butter powder (like PB2) can be used for a lower-calorie option, though it may result in a less rich and thinner smoothie. While oat milk adds creaminess, almond milk, soy milk, or dairy milk can be substituted.
Protein Powder Advice: An unflavored protein powder allows other flavors to shine. Whey protein results in a thinner consistency, while casein protein makes it thicker. For plant-based protein, let the smoothie sit for 2-3 minutes after the initial blend, then re-blend for 10 seconds to avoid grittiness.
Flax Seed Usage: Always use ground flax seeds for better absorption of omega-3s and fiber. Whole seeds may pass through your system undigested.
Meal Prep & Storage: For busy mornings, prepare individual freezer-safe bags with all dry and frozen ingredients. When ready, just add milk and blend. While best fresh, you can store leftovers in an airtight jar in the fridge for up to 24 hours; a quick shake or re-blend will restore consistency.
Variations: Try adding 1/2 cup frozen mixed berries for a PB&J twist, 1 tablespoon unsweetened cocoa powder for chocolate, 1/3 cup Greek yogurt for extra protein and tang, or 1/2 avocado (instead of banana) for a keto version.
Nutrition information is estimated based on common ingredients and serving sizes and may vary.

Nutrition

Calories: 400kcalCarbohydrates: 50gProtein: 30gFat: 20gSaturated Fat: 4gCholesterol: 2mgSodium: 150mgPotassium: 500mgFiber: 10gSugar: 25gVitamin C: 5mgCalcium: 200mgIron: 1.5mg
Keyword Frozen Banana Smoothie, Healthy breakfast smoothie, high protein peanut butter smoothie, Peanut Butter Banana Smoothie, Peanut Butter Protein Shake, Post-workout smoothie, Protein Powder Smoothie, Vegan smoothie
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