Turn your broiler on.
Clean your poblano peppers and place on a cookie sheet. Cook them under the broiler till the skin has blistered. Then put them in a bowl and cover with plastic wrap till they are cool.
When they have cooled, carefully peel the skin away and make a slit down the middle of each one, not quite to the end. So it looks like a pocket. Remove the seeds and set aside.
Preheat oven to 350F
Dice your onions and mince the garlic.
Heat a pan to med-high heat. Add the onion and saute for 3 mins. Then add the garlic and saute for another 2 mins. Place in a bowl.
Cook your ground turkey in the same pan on med heat. When its full cooked add the onion mixture, corn, tomatoes, black beans, quinoa, 1 cup of cheese and spices. Cook for about 3 min more until it's heated though.
Carefully stuff the peppers with the turkey mixture and place on a cookie sheet lined with parchment paper so the peppers don’t stick.
Place in the oven and bake for 10 mins. Take them out and add a little more cheese on top of peppers and bake again till the cheese has melted.