5. Cook the "steaks." Heat up the oil in a large, oven-proof skillet, and add the cauliflower "steaks." Season them with salt and pepper to taste and fry for about 3 minutes on each side, until slightly browned. Transfer the skillet to a preheated 400°F oven and bake for 15 minutes.
Store any leftover Cauliflower Steaks with Roasted Pepper Sauce in the refrigerator, wrapped in foil and plastic wrap, or in an airtight container. Store the sauce, the "steaks", and the breadcrumbs separately. It should last for 3-5 days.