01 - Place the strawberries, banana, Greek yogurt, milk, and sweetener (if using) in a blender.
02 - Add vanilla extract and seeds if desired.
03 - Blend on high speed until smooth and creamy, scraping down the sides if needed.
04 - Taste and adjust sweetness or thickness by adding more honey or maple syrup or milk.
05 - Pour into two glasses and serve immediately, optionally garnished with a strawberry slice.