Preheat your oven to 350 degrees Fahrenheit.
Use a casserole dish for this recipe to give the wings a rich flavor.
Place turkey wings and onion in the casserole dish.
Sprinkle seasoned salt, poultry seasoning, black pepper, and garlic on both sides of the wings.
Distribute chopped bell pepper and butter evenly over the wings.
This adds a fantastic base for your flavors.
Mix chicken stock and cornstarch in a bowl until fully dissolved.
This mixture will thicken up the sauce beautifully.
Pour the stock mixture over the wings.
Cover the dish with foil and bake for about 2 hours.