Peel the banana and cut it into slices.
Wash the apple, remove the core, and cut it into small pieces.
If your date isn't already pitted, remove the pit and chop it into smaller pieces.
(Optional) Soak the almonds in water for a few hours or overnight, then drain. This can help them blend more smoothly.
Add the banana slices, apple pieces, pitted date, almonds (soaked or not), 1 tablespoon of flax seeds, and 1 tablespoon of chia seeds into a blender.
Add about 1/2 cup of water to help everything blend smoothly. Adjust the amount of water based on how thick or thin you like your smoothie.
Add a handful of ice cubes to the blender.
Blend everything together until smooth. If the smoothie is too thick, you can add a little more water and blend again until it reaches your desired consistency.
Once everything is fully blended and smooth, pour your smoothie into a glass and enjoy immediately for the best flavor and nutrient retention.