Preheat your oven to 400°F (200°C).
Slice the oranges in half, remove the seeds, and place them cut-side up on a baking sheet.
Drizzle the oranges with a tablespoon of olive oil and a sprinkle of salt.
Roast the oranges for about 25-30 minutes until caramelized and tender.
While the oranges roast, prepare the kale. In a large bowl, combine the torn kale with a pinch of salt and massage it for 2-3 minutes.
In a small bowl, whisk together the remaining olive oil, honey, apple cider vinegar, salt, and pepper to make the dressing.
Once the oranges are roasted, let them cool slightly before cutting them into wedges.
In the bowl with the kale, add the roasted orange wedges, prosciutto, walnuts, and the dressing; toss gently to combine.
Taste and adjust seasoning if necessary, serving immediately after tossing.