Cook the tortellini according to the package directions. Drain and set aside.
Meanwhile, brown the ground beef in a large skillet over medium heat. Drain any excess grease, then stir in the taco seasoning, water, enchilada sauce, black beans, and corn until well combined.
Add the cooked tortellini and gently stir to coat everything in the sauce.
Sprinkle the shredded cheese evenly over the top. If using an oven-safe skillet, broil for about 3 minutes, or until the cheese is melted and bubbly. Otherwise, cover the skillet and cook over medium-low heat until the cheese has melted.
Top with sour cream and sliced scallions, then serve warm.
Notes
An oven-safe skillet makes melting the cheese under the broiler quick and easy.
Stir in diced tomatoes for a little extra freshness and flavor.
Pepper Jack adds a spicy kick, while Colby Jack keeps it mild and creamy.
Top with sour cream and sliced scallions for extra flavor and color.
Adjust the heat by using mild or hot taco seasoning to suit your taste.