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Using a large non-stick skillet, set it over medium-high heat. There's no need for oil initially; the ground beef will release its own fat while cooking. Add your ground beef to the pan, ensuring it's well broken up to cook evenly— a helpful tool for this purpose is highly recommended. Cook the beef until it's completely browned and releases its juices, then retain about two to three tablespoons of this fat in the skillet.
Next, it’s time to elevate the flavor. Add the chopped onions along with a mix of spices: cumin, paprika, chili powder, and salt. Spice levels can be adjusted to personal preference—more chili powder for added heat is always an option. Sauté everything together for about three to four minutes until the onions are softened, and the beef is beautifully browned.