Add 1 cup frozen spinach or kale to the blender.
Add ½ frozen banana, ½ tablespoon almond butter, and 1 cup frozen fruit (peeled and frozen orange segments, or frozen pineapple or mango chunks).
If using, add ½ teaspoon chia seeds.
Pour in 1 cup almond milk. Secure the blender lid.
Blend until smooth, stopping to scrape down the sides if needed. Add more almond milk, a little at a time, as needed to help it blend.
Add a handful of ice and blend again until smooth and cold.
Taste. If you want a sweeter or thicker smoothie, add more frozen fruit, blending after each addition, up to 2 cups total of frozen fruit.
Serve immediately.