Start by setting your oven to 425°F (220°C). A hot oven is crucial for achieving those delicious caramelized edges on the cauliflower.
Break the cauliflower head into even-sized florets. This ensures that they cook evenly, providing a consistent texture throughout.
In a small bowl, whisk together the grapeseed oil, white miso paste, tamari or soy sauce, rice wine vinegar, and red pepper flakes. This mixture is where the magic begins. Taste and adjust—add more vinegar if you like tanginess or more miso for deeper flavor.
In a large mixing bowl, toss the cauliflower florets with the dressing until they are well coated. Every piece should glisten with the umami goodness.
Spread the coated florets on a parchment-lined baking sheet, making sure they are in a single layer. This helps them roast evenly. Bake for about 25-30 minutes, or until the edges are golden brown and crispy.
Once roasted, remove the cauliflower from the oven. Drizzle with the optional sesame oil and sprinkle with chopped cilantro for a fresh, vibrant look. Serve with lime wedges on the side.