Place the broccoli florets on a parchment-lined baking sheet. Drizzle with olive oil. Use your hands to toss it gently so every floret is lightly coated with the oil. Sprinkle with a little salt. Roast in a 400 degree F oven for 15-20 minutes.
While broccoli is roasting, whisk the remaining ingredients together. Taste and add salt, if needed. Serve on the side of the broccoli as a dip, or add water to thin it out to use as a dressing.