This recipe is intended to produce a creamy soup, that still has little bits of broccoli and veggies visible. If you want a perfectly creamy soup, you'll need to blend it longer. However, this could make the potatoes gluey. I recommend blending a little at a time, and taste testing frequently to make sure you don't over blend. Or, skip the potatoes and increase the carrots, so you can blend more thoroughly and still get a good result. Finally, use a high speed blender rather than an immersion blender for the creamiest soups.