Cook tortellini according to package directions. Drain and set aside.

In a large skillet over medium heat, cook the ground meat until browned. Drain excess fat.

Add taco seasoning and water to the meat, stir well, and simmer for 3–4 minutes.

Stir in salsa, sour cream, black beans, and corn if using. Add the cooked tortellini and mix to combine.

Sprinkle with shredded cheddar cheese and let it melt over low heat.

Serve hot, garnished with green onions and cilantro.