Using a large skillet over medium heat, add the ground beef and season with salt and pepper. Crumble until cooked through. Set aside, leaving about 2 tbsp of fat in the pan.
Add the onion and garlic and cook for 3-4 minutes. Add the cauliflower rice and saute for 7-8 minutes or until tender and lightly crisp. Stir in the cilantro and lime juice.
Add the ground beef back to the pan and pour in the enchilada sauce. Stir to combine and coat in the sauce.
Serve in bowls topped with avocado, sliced radish, black olives, cilantro and green onion.