Preheat your oven to 400°F (200°C) to prepare for roasting the vegetables.
In a large mixing bowl, combine the broccoli florets, cauliflower florets, diced red onion, and diced red pepper. Drizzle with extra virgin olive oil and sprinkle with kosher salt and black pepper. Toss until evenly coated.
Spread the vegetable mixture evenly on a baking sheet and roast for 25-30 minutes, stirring halfway through, until tender and slightly golden.
While the vegetables roast, cook the quinoa according to package instructions: rinse quinoa, combine with water in a medium pot, bring to boil, reduce to simmer, cover and cook for about 15 minutes until liquid is absorbed.
In a small bowl, whisk together the dark balsamic vinegar and honey to create the dressing.
In a large serving bowl, layer the cooked quinoa first, followed by raw spinach. Top with the roasted vegetables, garbanzo beans, diced avocado, and sliced almonds.
Drizzle the balsamic dressing over the assembled bowl and sprinkle with fresh parsley. Serve warm and enjoy your Roasted Vegetable Quinoa Buddha Bowl!