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21 day smoothie diet recipes green smoothie in modern glass

21 Day Smoothie Diet Base Recipe

This flexible base recipe supports the 21 Day Smoothie Diet Plan—simple, nutritious, and delicious smoothies that help reset your habits and energize your days.
5 from 1 vote
Prep Time 5 minutes
Total Time 5 minutes
Course Breakfast, Meal Replacement, Snack
Cuisine American, Healthy
Servings 1 smoothie
Calories 300 kcal

Ingredients
  

  • 1 cup unsweetened almond milk or any plant-based milk
  • 1 cup frozen fruit such as berries, mango, or pineapple
  • 1 handful fresh spinach or kale
  • 1 tablespoon chia seeds or flaxseeds
  • 1 scoop protein powder plant-based or whey
  • 1 teaspoon nut butter optional, for healthy fats
  • 1 banana optional, for creaminess and sweetness

Instructions
 

  • Add the almond milk to the blender first.
    served smoothie from 21 day smoothie diet recipes in a glass
  • Add all other ingredients: frozen fruit, greens, seeds, protein powder, nut butter, and banana if using.
  • Blend until smooth and creamy. Add more liquid as needed for desired consistency.
  • Serve immediately or store in a sealed jar in the fridge for up to 24 hours.

Notes

Customize based on your goals: add oats or avocado for extra calories and fiber, or swap fruit to lower sugar. Great for breakfast or meal replacement. For batch prep, portion ingredients into freezer bags and just add liquid when blending.
Keyword 21 day smoothie diet, green smoothie, healthy smoothies, meal replacement, weight loss smoothie