Prep cranberries: Soak dried cranberries in a splash of warm water or broth for 5 minutes to plump. Drain.
Sauté veggies: In the claypot, sauté onion, celery, garlic, and half the rosemary in olive oil for 3–4 minutes until soft.
Add fruit: Stir in diced apple and cranberries, sauté 2–3 minutes.
Cook quinoa: Add quinoa and pour in 2 cups vegetable broth. Cook in claypot on Brown Rice mode for 20 minutes until quinoa is fluffy. Add a splash more broth if needed.
Finish salad: Fluff quinoa with a fork. Stir in parsley, thyme, remaining rosemary, and toasted walnuts. Season with salt and pepper.
Serve: Enjoy warm or at room temperature.