01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper if desired.
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 20–25 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 rolling 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 rest, covered, for 5 minutes. Fluff gently with a fork before serving.
04 - In a small mixing bowl, whisk together the tahini, lemon juice, maple syrup, minced garlic, water, salt, and pepper until completely smooth and creamy. Add additional water, one tablespoon at a time, until the dressing reaches a pourable consistency.
05 - Divide the fluffed quinoa evenly among four serving bowls. Arrange the roasted sweet potato, broccoli, and cauliflower alongside portions of halved cherry tomatoes, shredded red cabbage, sliced avocado, and baby spinach. Drizzle generously with the tahini dressing and finish with a sprinkle of pumpkin seeds.
06 - Serve immediately while the roasted vegetables are still warm. Enjoy right away for the best texture and flavor.