Roasted Cauliflower Steak with Pesto

1 large head of cauliflower
salt and pepper
1 T extra virgin olive oil
Pesto, homemade or from a jar

1. Preheat oven to 400 F
2. Heat olive oil on medium in a cast iron skillet.
3. With the base of the cauliflower on the cutting board, cut in half length-wise, then cut each half in half again length-wise.
4. Season steaks with salt and pepper.
5. Add cauliflower steak to skillet and sear on each side for 3 minutes.
6. Put cast iron in oven for 10 minutes to continue cooking. With 2 minutes left, brush pesto over steaks and put back in oven.