Step 1

In a very large skillet, heat the oil over medium heat. Add the beef and, using a spatula, press the beef into an even, flat layer in the pan. Let cook untouched for 4 minutes.

Step 2

Stir in the onion, bell pepper, garlic, salt, and black pepper, breaking the meat up. Continue cooking, stirring occasionally, until the meat is cooked through and the vegetables are tender, 5 to 6 minutes.

Step 3

Stir in the tomatoes, stock, rice, tomato paste, and Worcestershire. Bring to a boil over high heat. Reduce to a simmer, cover, and cook until the liquid is absorbed and the rice is tender, 20 to 25 minutes.

Step 4

Remove from the heat and stir. Sprinkle on the cheese. Cover and let stand until the cheese melts, about 2 minutes.

Step 5

Sprinkle with the parsley, if using, and serve.