How to Make It
Preheat the oven to 425°. On a rimmed baking sheet lined with foil, toss the cauliflower with the grapes, garlic, rosemary and olive oil and season with salt and pepper. Roast for about 30 minutes, until the cauliflower is tender and lightly caramelized in spots; stir halfway through. Transfer to a platter and serve warm.