Remove stems and chop the kale into bite-sized pieces.
Wash thoroughly and spin dry.
Massage the kale with a little olive oil for 2-3 minutes until softened.
Preheat oven to 350°F (175°C).
Spread almonds and walnuts on a baking sheet lined with parchment paper.
Toast for 5 minutes until fragrant.
Let cool, then crush into small pieces.
In a mason jar, combine apple cider vinegar, Dijon mustard, maple syrup, olive oil, salt, and pepper.
Shake well until fully emulsified.
In a large mixing bowl, toss massaged kale, cabbage, and radicchio.
Add crushed almonds, walnuts, sunflower seeds, and apple chips.
Drizzle with dressing and toss gently.
Serve immediately or let sit for 5 minutes for flavors to meld.