Add tomato sauce, chicken broth, adobo sauce, chili powder, cumin, oregano, salt, and pepper. Bring to a boil, then reduce to low and simmer for 5 to 10 minutes until slightly thickened.
Add shredded chicken, corn, black beans, 1/2 cup of the enchilada sauce, chili powder, cumin, salt, and chopped cilantro. Cook for an additional 5 minutes to heat through.
Lightly coat a 13×9-inch casserole dish with nonstick spray and spread a thin layer of enchilada sauce on the bottom.
Spoon about 1/3 cup of the chicken filling onto each tortilla, roll tightly, and place seam-side up in the casserole dish.
Pour remaining enchilada sauce over the rolled tortillas and sprinkle with shredded Mexican cheese.
Bake for 20 to 25 minutes, until the cheese is melted and the sauce is bubbly.
Garnish with fresh cilantro and your favorite toppings before serving.
Notes
You can make these enchiladas ahead of time and refrigerate for up to 24 hours before baking.