Preheat oven to 400 degrees F. Spread sweet potato on a cookie sheet and toss with olive oil. Place in oven for 20 minutes.
After 20 minutes, remove sweet potato, stir, and add broccoli and brussels sprouts. Drizzle with olive oil and toss with garlic, salt, and pepper. Return to oven for another 20-25 minutes.
Meanwhile, cook the quinoa according to package directions and prepare the dressing. When veggies are roasted and tender, remove from oven. Serve veggies over 1/4 cup cooked quinoa with a drizzle of dressing. For more flavor, add a sprinkle of goat cheese.