Pre-heat oven to 400 degrees and line a baking sheet with foil. Spray with cooking spray. In a large bowl, toss the cauliflower florets with the olive oil, salt and pepper. Roast until browned, about 20-35 minutes.
Place roasted cauliflower back in the same large bowl and toss with buffalo hot sauce. Stir in hummus then spread mixture in the bottom of a 9" x 13" baking sheet. Sprinkle with cheese then bake for 25-30 minutes or until bubbly.
Top with optional garnishes and serve with tortilla chips or veggies.