Preheat the oven to 425 degrees F.
Evenly spread the cauliflower on a baking sheet and season with salt and pepper. Transfer to the oven and roast, tossing once with a spatula, until golden brown at the edges, about 20 minutes.
Put the butter in a small skillet over medium-low heat. Once it's melted, add the pine nuts and cook, stirring frequently, until they're lightly golden brown, about 5 minutes. Add the garlic and dates and continue cooking until they're softened, 2 to 3 minutes more; season with salt.
Transfer the hot cauliflower to a serving bowl, drizzle the pine nut mixture over the top and toss to combine. Taste and adjust seasoning if necessary and serve warm or at room temperature.
Recipe courtesy of Claire Robinson for Food Network Magazine