Fry the ground turkey with the salt, pepper and all of the spices for about 8 minutes until it's no longer pink, stirring to break up the lumps.
Remove the turkey from the pan and stir-fry the onions, jalapeño, and peppers in the remaining olive oil for about 5 minutes until the vegetables soften and start to brown.
Stir the black beans, diced chiles, enchilada sauce, and corn into the onions and peppers along with the cooked turkey.
Cover the pan and bring the contents to a simmer, then take the lid off and cook everything for 10 minutes.
Stir in the tortillas and sprinkle the cheese on top, then turn the heat off once the cheese starts to melt.
Serve the turkey enchilada casserole with cilantro, avocados, or queso if desired.