1) Marinate the fillet slices and rest it for three hours 2) Then fry in four tablespoons of oil 3) Fry on high flame till its browned up, lower flame to cook 4) Remove on platter and cut strips 5) Stirfry veggies with salt, black pepper and garlic in a tablespoon of oil on high flame for ten minutes 6) Add steak strips and mix well and pour on casserole