Cauliflower roasted in big chunks is delicious and the quick blue cheese vinaigrette makes it special. Try it as a side dish for steak.
- Position rack in lower third of oven; preheat to 450°F. Coat a large rimmed baking sheet with cooking spray.
- Cut cauliflower into quarters. Remove any extra woody core from the ends, but keep the quarters intact. Brush with 2 teaspoons oil and sprinkle with 1/8 teaspoon salt. Place cut-side down on the prepared baking sheet.
- Roast the cauliflower for 15 minutes. Turn so the opposite cut sides are down. Continue roasting until tender, 15 to 20 minutes more.
- Meanwhile, combine the remaining 1 tablespoon oil, the remaining 1/4 teaspoon salt, blue cheese, vinegar, water, scallion greens and pepper in a small bowl. Serve the roasted cauliflower drizzled with the vinaigrette.