Heat olive oil in a large seasoned cast-iron skillet over medium-high heat.

While the pan is heating, combine mustard, garlic powder, and Italian seasoning in a small bowl and mix well.

 Season steaks with salt and pepper to taste.

Generously coat each steak with herb mustard, making sure that the steak is evenly coated on all sides.

When olive oil starts to smoke, swirl the skillet carefully to ensure that the entire cooking surface is coated.

 Add steak and sear on one side first, approximately 1-2 minutes. Flip and sear the other side for another 1-2 minutes. Make sure to sear the sides as well by holding the steak upright with tongs.

 After searing, place the steak back into the pan and lower the heat down to medium. Allow steak to cook on one side for 5-7 minutes. Turn the steak and cook for another 3-5 minutes until you reach the desired doneness. (This recipe will result in medium-rare steaks).

Remove from heat and let the steak rest for 5 minutes.

To serve, slice steak against the grain and serve with a choice of sides.