Brown the beef in a large saute pan. Drain, remove from the pan, and set aside. In the same pan, add the oil and heat over medium high heat. Add the frozen cauliflower rice and cook for 4-5 mins until softened.
Add the beef back into the pan along with the tomatoes (with juices), and spices. Stir to combine and cook for an additional 1-2 minutes until heated through. Serve with avocado, cilantro, and hot sauce. Enjoy!