Cut the cauliflower into florets. Fill a blender to about ¾ full with the cauliflower. Add cold water to cover the cauliflower by 2 inches. Pulse the cauliflower and water about 4 to 6 times to form small pieces. Drain in a colander. Rice the remaining cauliflower florets in the same manner.
Heat a large sauté pan over medium heat. Add the oil. When the oil begins to shimmer, add the onion, garlic, and mushrooms. Sauté the the vegetables for 6 to 8 minutes or until the onions are translucent and the mushrooms are cooked.
Add the baby spinach and sauté for 2 to 3 minutes. Stir until the spinach is wilted.
Add the riced cauliflower to the sauté pan and stir to combine.
Add the white wine and place a lid on the pan. Steam the rice for 3 to 4 minutes.
Season with the salt and pepper.
Serve warm.
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Notes
Sauteing is the method to use when making cauliflower rice pilaf. As cauliflower rice cooks quickly, first saute the onion, garlic, and mushrooms which need longer to cook.
Toss in some baby spinach and cook quickly. It should just wilt.
Add the riced and drained cauliflower to the saute pan. Toss to combine the vegetables.
Add a little white wine (or chicken stock), pop a lid on the pan and allow the pilaf to steam for a few minutes. Season to taste with salt and pepper.
If cauliflower rice pilaf is made in advance, it can be refrigerated up to 3 days. Prepare the recipe as directed and completely cool the rice. Store in an airtight container in the refrigerator. To reheat, microwave on 70 percent power for 1 to 2 minutes. Stir and continue microwaving at 30 second intervals until heated through.