Ingredients 3 tablespoons Dijon mustard 2 tablespoons extra-virgin olive oil 1 garlic clove, minced Salt and freshly ground pepper One 2-pound head of cauliflower, cut into 1-inch florets Instructions Preheat the oven to 400°. In a bowl, whisk the mustard, oil and garlic; season with salt and pepper. Toss in the cauliflower; spread on a baking sheet. Roast for 30 minutes. Serve.