1.Preheat oven to 425F. Toss sweet potatoes with olive oil, paprika, garlic powder, salt + pepper. Roast 15 min, flip, then roast another 10-20 min until tender + caramelized.
2.Cook quinoa per package directions. Spread on a tray to cool to room temp (or chill 15 min in the freezer).
3.Whisk all dressing ingredients in a jar and shake.
4.Toss chopped spinach + cooled quinoa in a large bowl. Add roasted sweet potatoes and avocado.
5.Dress only the portion you're eating now (about 3/4 of the dressing). Store undressed leftovers up to 3 days.