1. Preheat the oven to 180 degrees celsius.
2. In a large pan heat the oil over medium heat. Once hot add the garlic and onions with a pinch of salt. Let this cook for about 2 minutes stirring once or twice. Add the 1 Tablespoon of cumin and 1 Tablespoon of chili powder and stir.
3. Season the turkey mince with 1 Tablespoon of cumin, 1 Tablespoon of chili powder, 1/2 tsp salt, and few pinches of black pepper. Add this to the pan and break up the turkey mince. Let this cook stirring occasionally until the turkey is cooked.
4. In a heatproof casserole pan add a layer of salsa. Top with the cooked turkey mixture. Now add the black beans and corn and gently mix. Finish with more salsa and topping it with a layer of cheese.
Pop the casserole into the oven and let this bake for 12-15 minutes until it is all warm and the cheese has melted.
Serve hot and garnish with fresh lime juice and cilantro. Enjoy!