Preheat your oven to 450℉ and place a large cast iron skillet inside.
Whisk together vegetable oil, black pepper, smoked paprika, garlic powder, onion powder, and salt. Set aside.
Cut cauliflower into 1-1.5 inch 'steaks', leaving the stem intact as much as possible to hold the big slices together.
Brush the cauliflower with the smoky seasoning mixture on one side and place that side face down in your hot skillet.
While the cauliflower is searing, before transferring back to the oven, baste the other side with remaining oil mixture.
Put the skillet back in the oven and bake for 10 minutes.
Then, flip the steaks and bake for another 15 minutes. Serve and enjoy!
