Heat a large skillet over medium heat. Add olive oil, onions, and crushed red pepper. Saute for 3-4 minutes or until soft and translucent.
Add cauliflower rice to skillet, stir well for 1 minute. Add marinara sauce, olives, and capers. Reduce heat to low, cover pan and allow to simmer for 4-5 minutes or until cauliflower is heated through.
Serve with fresh basil and grated parmesan cheese (both optional)