Cook the cauliflower rice according to the package instructions.
Heat olive oil in a skillet and sauté the onions until soft.
Add the mushrooms to the skillet and continue to sauté until they are cooked.
Stir in the garlic, then add the cauliflower rice and soy sauce. Mix well until the cauliflower rice
has absorbed the soy sauce.
Add the spinach on top of the mixture, stir, and cook until the spinach has wilted.