Cut the cauliflower into florets and place them in a food processor. Pulse until it resembles the texture of rice.
Cook the Cauliflower Rice:
Heat a large skillet or wok over medium heat. Add 1 tablespoon of oil.
Add the cauliflower rice to the skillet and stir-fry for 5-7 minutes, or until the cauliflower is tender but not mushy. Season with salt and pepper. Set aside.
Prepare the Vegetables:
In the same skillet, add another tablespoon of oil.
Add the chopped onion, diced carrots, and frozen peas. Stir-fry for about 3-5 minutes until the vegetables are tender.