Set your oven to 375°F and let it warm up.
Spread the sweet potato, parsnips, and golden beets evenly on two baking sheets.
Drizzle grapeseed or olive oil over the veggies and toss them gently with your hands to coat.
Sprinkle sea salt over all, then roast in the oven for about 30 to 40 minutes until they're tender and slightly caramelized.
While the veggies roast, combine tahini, water, lemon juice, maple syrup, cinnamon, and salt in a blender and process until creamy; add a bit more water or lemon juice if the dressing feels too thick.
To assemble, divide spinach, sliced cabbage, and brown rice into bowls, top with the roasted root vegetables, and drizzle with the maple cinnamon tahini dressing.
Finish each bowl with sunflower seeds and fresh parsley or cilantro if desired, and serve immediately.