Preheat oven to 375°F
Spray a 9×13 casserole dish
Brown the ground turkey in a pan until cooked through (no pink), then set aside
Microwave both grain packets per package instructions
Add to the casserole dish: quinoa + rice packets, cooked turkey, black beans, frozen corn, frozen fajita veggies, salsa, green chiles, and taco seasoning
Stir everything together right in the dish
Sprinkle all 1½ cups cheese over the top
Bake uncovered 12–15 minutes, until hot + bubbly and cheese is melted
Let sit a few minutes, then scoop and serve
