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High Protein Watermelon Smoothie - Cool, Refreshing, and Satisfying

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Prep Time 5 minutes
Total Time 5 minutes
Servings: 2 servings
Ingredients Method

Ingredients
  

  • Watermelon, cubed and frozen (about 3 cups; seedless if possible)
  • Unsweetened protein powder (whey, pea, or a blend; vanilla or unflavored works best)
  • Plain Greek yogurt (or a thick dairy-free yogurt)
  • Unsweetened coconut water (or cold water/almond milk)
  • Fresh lime juice (about 1 tablespoon; lemon works in a pinch)
  • Honey or maple syrup (optional, to taste)
  • Chia seeds or ground flaxseed (optional, for fiber and omega-3s)
  • Fresh mint leaves (optional, for a cooling note)
  • Pinch of sea salt (optional, enhances flavor and electrolytes)
  • Ice cubes (optional, for extra frostiness if your watermelon isn’t fully frozen)

Method
 

  1. Prep the watermelon: Cut watermelon into 1-inch cubes, remove seeds, and spread on a parchment-lined tray. Freeze for at least 4 hours or overnight. This step creates that thick, slushy texture without diluting the flavor.
  2. Add liquids first: Pour 3/4 to 1 cup of coconut water (or your liquid of choice) into the blender. Liquids at the bottom help blades catch frozen fruit easily.
  3. Layer in protein and yogurt: Add 1 scoop of protein powder and 1/2 cup of Greek yogurt. These add creaminess and a big protein boost.
  4. Brighten and balance: Squeeze in the lime juice and add a pinch of sea salt. If your watermelon isn’t very sweet, add 1–2 teaspoons of honey or maple syrup.
  5. Boost with extras: Add 1 tablespoon chia or ground flaxseed for fiber and staying power. A few fresh mint leaves create a cooling finish.
  6. Add frozen watermelon: Toss in the 3 cups of frozen watermelon. If your blender struggles, add a handful of ice or a splash more liquid to get things moving.
  7. Blend until smooth: Start on low, then increase to high for 30–45 seconds. You’re aiming for a thick, pourable consistency with no chunks.
  8. Taste and tweak: Check sweetness and tang. Add more lime for brightness, more liquid to thin, or a touch of sweetener if needed.
  9. Serve immediately: Pour into chilled glasses and garnish with mint or a small watermelon wedge. Drink right away for the best texture.