Preheat the oven to 425 degrees F and line a baking sheet with parchment paper.
Chop sweet potatoes into ½ inch bite size chunks.
Toss chopped sweet potato chunks on your prepared baking sheet with 1 tbsp of olive oil to coat and season with salt and pepper. Roast for 35 minutes total. At the 10 minute mark remove the pan from the oven and add broccoli florets. Sprinkle the remaining olive oil, salt and pepper over the broccoli and toss everything on the pan together. Add back to the oven for the remaining 25 minutes.
While the sweet potatoes roast, put the quinoa in a fine-meshed sieve and rinse well under cold running water, swishing the quinoa with your hand. Drain the quinoa well.
Place quinoa and water in a medium saucepan and bring to a boil. Once boiling, reduce heat to simmer, cover and let it cook for 15 minutes. Remove from heat (Or follow directions on the packet).
Place a clean tea towel or 3 layers of paper towel over the saucepan, place the lid back on and let sit for 5 minutes. The tea towel or paper towel will absorb excess moisture. Fluff the quinoa with a fork then turn it into a bowl and allow to cool.
Once your veggies are nice and roasted, remove from the oven and combine them with the quinoa.
Chop parsley, crumbled feta and add to the quinoa and vegetable mixture.
In a small bowl mix your dressing ingredients
Toss dressing over quinoa and vegetable mixture.