To rice cauliflower, put cauliflower florets in a blender. Cover cauliflower with water. Pulse 15-20 times. Cauliflower should look the size of rice. Drain off water in a fine colander.
Over medium heat, put 1 tbsp olive oil in frying pan or wok. Add cauliflower rice. Cook for about 10 minutes or until slightly brown. Put cauliflower in a medium bowl.
Over medium heat, in frying pan or wok, add 1 tbsp olive oil. Add chopped onion and cook for 3 minutes. Add broccoli, pepper, mushrooms. Saute for about 10 minutes. Add cooked chicken. Saute another few minutes to heat up chicken.
To make peanut sauce, add peanut butter, tamari, lime juice, coconut milk, sesame oil, garlic, maple syrup in a small bowl. Whisk to combine. If your sauce is too thick add more coconut milk.
Serve vegetables/chicken over cauliflower rice. Drizzle with peanut sauce.