The Cuisinart Smart Stick Hand Blender is sub-par for making smoothies. It’s difficult to catch all the chunks of frozen bananas and kale; however, once all the big pieces are processed, the rest is relatively quick and easy. That said, the result isn’t that great. It’s grainy due to the larger kale particles that are left unprocessed, and although there’s some foam at the top, the rest of the smoothie is thick and unpleasant to drink. We use the ‘High’ setting for our test.