1. Preheat your oven to 400°F (200°C) . Remove leaves from stem end of cauliflower, leaving the core intact. Place cauliflower core side down on a work surface. Using a large knife, slice cauliflower into four steaks from the center of cauliflower, each steak should be approximatively 1/2 inch thick. Arrange the cauliflower steaks on a oiled baking sheet along with the broken florets. 2. Combine olive oil, minced garlic, salt, pepper, italian herbs, and thyme into a bowl. Brush the cauliflower slices generously on both sides with this mixture, then roast in the oven for 15 to 20 minutes, until golden and cooked through. You can flip the steak a halftime, but it’s not mandatory.