Prepare your dates. If your dates are dry or firm, soak them in warm water for 10 minutes to soften them up. This makes blending much easier and creates a smoother texture. Drain them well before adding to the blender.
Add liquid first. Pour your milk into the blender before anything else. This prevents the blades from getting stuck and helps everything blend more smoothly.
Layer your ingredients. Add the pitted dates, frozen banana, almond butter, vanilla extract, cinnamon, and sea salt. If you're using protein powder, add it now too.
Blend on low, then high. Start blending on low speed for about 10 seconds to break down the dates. Then increase to high speed and blend for 45-60 seconds until completely smooth and creamy.
Add ice and blend again. Toss in your ice cubes and blend for another 30 seconds until the smoothie reaches your desired consistency. If it's too thick, add a splash more milk. Too thin? Add more ice or another date.
Taste and adjust. Give it a quick taste test. Want it sweeter? Add another date. Need more depth? A pinch more cinnamon works wonders.
Serve immediately. Pour into a glass and enjoy right away for the best texture and flavor. You can top it with a sprinkle of cinnamon or some chopped nuts if you're feeling fancy!