Heat a cast iron skillet until very hot, in a well ventilated area or I did it on a hot grill
Brush steaks with olive oil.
Coat each side of the steaks with 1 teaspoon of blackening seasoning.
Place steaks in the iron skillet, flipping steaks halfway through cooking. To cook a 1-inch-thick steak medium rare, cook about 4 minutes on first side and 3 minutes on other side.
Spoon 2 tablespoons of Creamy Horseradish Sauce on each plate before topping with the cooked steak.