Preheat the oven to 350 degrees and prepare a greased 9x13 oven-safe baking dish.
In a sauté pan on the stove, heat olive oil on medium high heat for 3 minutes.
Cook onions, garlic, and ground turkey in olive oil for 10 minutes or until the turkey is browned.
While the turkey mixture is cooking – prepare the peppers. Slice halfway from top to bottom. Remove seeds and any white inner pieces. Place pepper halves in prepared baking dish.
When the ground turkey is cooked, remove from the heat. Stir in tomato sauce, spices, black beans, corn and cooked rice until combined.
Stuff the peppers with turkey filling (about ¾ cup filling per pepper) Try to pack the filling into the peppers using a spoon or your hands. Top with a sprinkle of cheddar cheese.
Bake the peppers uncovered in the oven for 15-20 minutes or until the cheese on top is melted and bubbling. The peppers should be able to be pierced easily with a fork.