Preheat a grill to high.
Season the fillets with steak seasoning and salt and pepper, to taste. Put on the grill and cook desired doneness.
Add the red wine to a medium saucepan over medium heat and reduce it by half. Add the water, then add sugar and berries and cook for about 5 minutes. Add 3 tablespoons of cornstarch and stir until thickened.
Remove the steaks from the grill to serving dishes and top with sauce and blue cheese crumbles.