Core and julienne or grate the apples. Immediately toss them with lemon juice to prevent browning.
Peel and grate or julienne the carrots using a box grater, mandoline, or food processor.
In a small bowl or jar, whisk together olive oil, honey (or maple syrup), apple cider vinegar, Dijon mustard, salt, and black pepper until well combined.
In a large mixing bowl, combine the carrots, apples, and chopped herbs.
Pour the dressing over the salad and toss gently until evenly coated.
Add walnuts or seeds if using, and toss once more.
Taste and adjust seasoning with extra salt, pepper, or lemon juice if needed.
Serve immediately or chill for 10–15 minutes before serving for best flavour.