While the vegetables are roasting, combine the quinoa and 2 cups of broth (or water+salt) in a medium-large saucepot. Bring to a boil over high heat, then reduce to low and cover the pot. Cook for 15 minutes, or until broth is absorbed. Remove pot from stove, and fluff quinoa gently with a fork or wooden spoon.
Next for the quinoa, stir in 1 tablespoon of the herbs, 1 tablespoon of green onion, the milk, and half of the cheese. Once vegetables are done, add the roasted sweet potatoes, onions and mushrooms to the quinoa and fold gently to combine.
Lightly grease a 9x13 inch baking dish, and spoon quinoa/veggie mixture in. Sprinkle remaining cheese and then spread breadcrumb mixture evenly on top. Add the rest of the green onions for color. If you’re prepping this for the next day, cover with plastic wrap and store in the fridge. When ready, bake at 425° F for 20-25 minutes, or until breadcrumbs are toasted and golden brown. Leftovers are just as good, and keep well in both the fridge and freezer.
*To make gluten free, use gluten-free bread crumbs (or make your own with some toasted gluten-free bread!).