Preheat the oven and prep the pan. Heat your oven to 450°F (230°C). Line a large baking sheet with parchment for easy cleanup, or use a lightly oiled sheet pan to encourage browning.
Trim the cauliflower. Remove the outer leaves and trim the bottom of the stem, keeping the core intact. This core is what holds the steaks together, so don’t cut it out.
Slice into steaks. Stand the cauliflower on its base and slice down through the center.
Aim for 1 to 1½-inch-thick steaks. You’ll likely get 2–3 steaks per head, plus some loose florets. Roast the florets alongside—no waste.
Make the seasoning oil. In a small bowl, mix 3 tablespoons olive oil, 2 minced garlic cloves, 1 teaspoon lemon zest, 1 teaspoon smoked paprika, ½ teaspoon ground cumin, ½ teaspoon salt, and ¼ teaspoon black pepper.
Add a pinch of red pepper flakes if you like heat.
Season both sides generously. Brush the steaks and any loose florets with the oil mixture. Don’t be shy—coating the flat surfaces well helps with caramelization. Arrange them in a single layer on the sheet pan.
Roast until golden and tender. Roast for 15 minutes, then gently flip.
Roast another 12–18 minutes until the stems are fork-tender and the edges are deeply browned. If some spots are lagging, give them 2–3 extra minutes.
Finish with brightness. Right out of the oven, squeeze on ½ lemon and shower with chopped parsley and fresh thyme leaves. Taste and adjust salt and pepper.
Optional savory finish. For extra umami, sprinkle a little Parmesan or nutritional yeast while the steaks are hot.
It melts into the crackly bits and tastes amazing.
Optional sauce. Whisk 2 tablespoons tahini with 1 tablespoon lemon juice, 1 tablespoon water (more to thin), a pinch of salt, and a drizzle of olive oil. Or stir plain Greek yogurt with lemon, garlic, and pepper. Drizzle over the steaks or serve on the side.
Serve. Plate with grains, salad, or a simple bean dish.
These steaks also make a hearty base for a bowl with quinoa and roasted chickpeas.