How to Make the Ultimate Umami-Bomb Vegetarian Demi-Glace
1 large head of cauliflower (2 1/2 pounds), cut into 1-inch florets
1/4 cup extra-virgin olive oil
Kosher salt and freshly ground pepper
Tahini and chopped flat-leaf parsley, for serving
Preheat the oven to 425°. On a large rimmed baking sheet, toss the cauliflower florets with the olive oil and season with salt and pepper. Roast for about 40 minutes, until tender and browned, tossing halfway through. Transfer the cauliflower to a bowl. Drizzle with tahini, sprinkle with parsley and serve.