First Step: Prep Ingredients
Chop the cauliflower into small florets, dice the onion, and mince the garlic. Gather ground beef, tomato paste, seasonings, and cheese so everything is ready for quick cooking.

Second Step: Cook Cauliflower
Heat 1 tablespoon olive oil in a large cast iron or oven-safe skillet over medium heat. Add cauliflower florets, season with half the salt and pepper, and cook, stirring occasionally, until cauliflower begins to brown, about 4-5 minutes. For a faster method, cover the skillet and steam the cauliflower with 1/4 cup water for 3-4 minutes until tender. Alternatively, you can roast cauliflower separately at 425°F for 12–14 minutes until browned, then add to the skillet later.

Third Step: Brown the Ground Beef
Transfer cooked cauliflower to a plate and set aside. In the same skillet, add ground beef and cook over medium-high heat for 5–7 minutes, breaking it up as it cooks. Initially, avoid moving the beef to develop a flavorful crust. Drain any excess liquid once beef is browned.

Fourth Step: Combine Ingredients and Build Flavor
Stir in minced garlic and tomato paste into the browned beef. Add the remaining salt and pepper, along with optional seasonings such as chili powder, cumin, oregano, smoked paprika, and cayenne for a spicier, Mexican-inspired taste. Pour in 1/4 cup water, stirring to incorporate flavors and loosen the mixture. Cook until aromatic and the sauce thickens slightly, about 2-3 minutes.

Fifth Step: Merge Cauliflower with Beef Mixture
Return the cauliflower florets to the skillet, mixing gently with the beef mixture to combine. For a creamier texture, stir in 1/4 cup heavy cream if desired. Add about 1/4 cup shredded cheddar cheese and stir to melt into the skillet.

Final Step: Add Cheese and Finish Cooking
Sprinkle the remaining shredded cheddar cheese evenly over the skillet. Transfer the skillet to a preheated oven at 400–425°F. Bake for about 5 minutes or broil for 2–3 minutes until cheese is melted and lightly browned. Remove from oven, garnish with sliced green onions, cilantro, sour cream, or hot sauce as preferred, and serve warm.