Get you an immersion blender. You can get a decent one for like $35 and you can use it to make awesome soups and smoothies and homemade mayo and other things that are delicious, and you will never eat gross uncreamy mashed cauliflower again!
Get an immersion blender. It's really useful, and your protein blends will be amazingly smooth. Plus, you can throw fruit in for better glycogen replenishment (compared to sugar/fructose).