1. Bring a large pot of salted water to a boil and cook spaghetti until al dente. Drain and set aside.

2. Heat olive oil in a large skillet over medium heat. Add ground beef and cook until browned, breaking it apart as it cooks.

3. Add chopped onion and cook until soft, then stir in garlic and cook briefly until fragrant.

4. Sprinkle taco seasoning over the beef mixture and stir well to combine.

5. Add diced tomatoes and tomato sauce, mixing until fully incorporated.

6. Pour in beef broth or water and let the sauce simmer for 5–7 minutes.

7. Add cooked spaghetti to the skillet and toss until evenly coated with the sauce.

8. Reduce heat and stir in cheddar cheese and cream cheese until melted and creamy.

9. Season with salt and pepper to taste, adjusting as needed.

10. Garnish with fresh cilantro if desired and serve warm.