Heat a large skillet over medium heat. Add the ground beef and cook, breaking it up with a spatula until browned and no pink remains. Drain any excess fat.

Sprinkle the taco seasoning over the beef, pour in one cup of water, and stir to mix, ensuring the seasoning coats the meat well.

Stir in the drained black beans, drained corn, and the ready rice. Make sure everything is evenly distributed.

Bring the mixture to a gentle simmer and let it cook for about five minutes, allowing the rice and beans to absorb the flavors.

Sprinkle the shredded cheese evenly on top. Cover the skillet and let it sit for 3 to 5 minutes until the cheese is melted and gooey.

Taste the mixture and adjust with salt and pepper if needed. Garnish with chopped cilantro if desired and serve hot.