Cauli Rice
It really is easy to make your own cauliflower rice.
Rice a head of cauliflower. Do this by hand, or throw large chunks in a big blender, covered with water (this is because the vitamix blender works better with liquid). (A food processor may work). Once diced (not mushed), strain with a cheese cloth, and bake until browned to preference.
That is literally it!
You can also buy frozen, already riced, and you just have to saute or bake.