Preheat oven to 425°F (220°C).
Toss cauliflower florets with olive oil, salt, and pepper. Spread on a baking sheet and roast for 25-30 minutes until golden and crispy.
Reserve a few florets for garnish. In a food processor, combine roasted cauliflower, chickpeas, tahini, lemon juice, garlic, and a bit of water. Blend until smooth and creamy. Add more water as needed.
Transfer hummus to a serving bowl. Top with reserved roasted cauliflower, toasted pine nuts, chopped parsley, and a drizzle of olive oil.
Serve with pita bread, veggies, or crackers.