Preheat oven to 350°F.
Brown ground beef in large skillet over medium high heat. Add taco seasoning and stir until combined.
Add the corn, tomatoes, black beans, and ¼ cup of salsa. Stir until everything is completely mixed together.
Spread 2-3 tablespoons of salsa on the bottom of a 9 x 13 pan. Layer with two tortillas, so they cross in the middle. Cut a third tortilla in halves and cover the end gaps.
Add half of the beef mixture over the tortillas and sprinkle with 1 cup of cheese. Repeat the layers (tortillas, beef mixture, cheese).
Top with another layer of tortillas and spread the remaining salsa over top the tortillas. Sprinkle the remaining cheese over the salsa.
Bake for 30 minutes, until cheese is bubbling. Let cool 10 minutes before serving. Garnish with sour cream or plain Greek yogurt and enjoy!