Place chopped broccoli, red onion, sunflower seeds and dried cherries in a large mixing bowl.
In a small bowl, whisk together yogurt, vinegar and maple syrup until smooth. Pour over broccoli mixture and toss well until everything is coated. Taste and adjust seasoning if needed, adding salt, pepper, or vinegar to get flavours to really pop if necessary. The broccoli will soften a bit and the salad will get even more flavourful as it sits.