Directions

1. Combine blue cheese, yogurt, lemon juice and salt and pepper. Stir and set aside.
2. Preheat grill to medium-high. Season each turkey fillet with salt, pepper and chili powder. Place turkey fillets on the grill. Cook for 5 minute on each side. Continue cooking until the internal temperature of the turkey reaches 170°F (77°C).
3. As the turkey is cooking, grill onions in a grill pan.
4. Combine butter and hot sauce.
5. Serve each turkey fillet on a bun and top with butter mixture, grilled onions, lettuce and blue cheese mixture.