Heat oven to 425 degrees F.
Trim cauliflower of leaves and stem if necessary. Carefully slice vertically into approximately 1 inch slices. One medium head of cauliflower will yield about 4 full slices. (There will be some pieces that don't hold together in a slice. Roast these with the steaks and save for snacks or for your favorite buddha bowl.)
Carefully transfer steaks to a lined baking sheet. Brush the tops with extra virgin olive oil, turn over and brush other side with extra virgin olive oil. Toss miscellaneous pieces with oil as well. Sprinkle cauliflower with kosher salt.
Roast for 15 minutes. Gently flip steaks and roast for an additional 10-15 minutes, until cauliflower is tender and nicely browned.
Serve steaks atop Romesco Style Sauce.