01 - Preheat oven to 425°F (220°C). Line a baking sheet with parchment paper.
02 - In a large mixing bowl, combine cauliflower florets with olive oil, garlic powder, smoked paprika, salt, and black pepper until evenly coated. Spread the seasoned cauliflower in a single layer on the prepared baking sheet.
03 - Roast the cauliflower for 20 minutes. Meanwhile, in a small bowl, whisk together hot sauce and melted vegan butter.
04 - Remove the cauliflower from the oven. Drizzle with the buffalo sauce mixture and toss to ensure each floret is coated. Return the cauliflower to the oven and roast for an additional 10 minutes, or until golden brown and slightly crispy.
05 - While the cauliflower is roasting, rinse the quinoa under cold running water. In a saucepan, combine the rinsed quinoa, water, and salt. Bring the mixture to a boil, then reduce the heat to low, cover the saucepan, and simmer for 15 minutes, or until all the water has been absorbed. Fluff the cooked quinoa with a fork.
06 - In a small bowl, whisk together tahini, lemon juice, maple syrup, olive oil, 2 tablespoons of water, minced garlic, and salt until the dressing is smooth and creamy. Add more water, one tablespoon at a time, if a thinner consistency is desired.
07 - Divide the cooked quinoa evenly among four serving bowls. Top each bowl with the roasted buffalo cauliflower, shredded carrots, halved cherry tomatoes, diced cucumber, thinly sliced red cabbage, and sliced avocado. Garnish with chopped fresh parsley and sprinkle with sesame seeds, if using.
08 - Drizzle the tahini dressing generously over each bowl. Serve immediately.