- 1 mango, chopped, or more to taste
- 1 banana, sliced, or more to taste
- 3/4 cup cold water, or as needed
- 1/2 cup chopped romaine lettuce
- 2 ice cubes
- 1 teaspoon flax seeds (optional)
- 1 tablespoon chia seeds
- Blend mango, banana, water, lettuce, ice, and flax seeds together in a blender until smooth, about 2 minutes. Add chia seeds to mango mixture and stir. Let sit until smoothie thickens slightly, about 2 minutes.