8 slices red onion
8 slices tomato
8 lettuce leaves
8 whole wheat hamburger buns, split
2 tbsp. reduced-sodium taco seasoning
1 cup crushed baked tortilla chip scoops
1 jar (16 ounces) salsa, divided
1 can (15 ounces) black beans, rinsed and drained
1/3 cup quinoa, rinsed
2/3 cup water