Makes about 8 tacos, serving 3 to 4
- Brown Beef & Onion: Put beef and onion into 10 or 12-inch nonstick skillet over high heat. Cook, stirring occasionally, until beef is cooked through and nicely browned, about 8 minutes.
- Combine & Heat: Stir sauce into skillet; heat through, about 1 minute. Serve in warm tortillas with cilantro and tomato