Preheat the oven to 375 degrees . In a small saucepan, bring the BBQ sauce ingredients to a boil. Lower the heat and simmer until thickened, 20 minutes.
Meanwhile, in a bowl, combine the turkey, scallions, parsley, thyme, salt and pepper; form into 4 patties. Coat the patties in the flour, then the eggs, then the cornflakes. Spray a baking sheet with the cooking spray. Place the turkey patties on the sheet and spray the patties. Bake until crisp, 18 to 20 minutes.
Place the turkey patties on the rolls, doused with the sauce. Serve with the toppings of your choice.