01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper.
02 - Toss the cubed sweet potato, broccoli florets, and cauliflower florets with olive oil, smoked paprika, salt, and pepper until evenly coated. Spread in a single layer on the prepared baking sheet. Roast for 20 to 25 minutes, stirring halfway through, until the vegetables are tender and lightly caramelized at the edges.
03 - While the vegetables roast, combine the rinsed quinoa, water, and a pinch of salt in a medium saucepan. Bring to a boil over medium-high heat, then reduce the heat to low, cover, and simmer for 15 minutes or until all the liquid has been absorbed. Remove from heat and let sit, covered, for 5 minutes. Fluff with a fork.
04 - In a small bowl, whisk together the tahini, lemon juice, maple syrup, minced garlic, 2 tablespoons of water, salt, and pepper until smooth and creamy. Add additional water, one tablespoon at a time, until the dressing reaches your desired drizzling consistency.
05 - Divide the fluffed quinoa among four bowls. Arrange the roasted vegetables, halved cherry tomatoes, sliced red cabbage, baby spinach, and sliced avocado over each portion of quinoa. Drizzle generously with the tahini dressing and sprinkle with pumpkin seeds.
06 - Serve immediately while the roasted vegetables are still warm. Enjoy.