1Preheat your oven to 180°C (350°F).
Pit the Medjool dates and chop them into small pieces. Peel the oranges, remove any seeds, and cut the segments into bite-sized pieces.
In a medium baking dish, spread the chopped dates and orange pieces evenly as the base layer.
In a mixing bowl, combine the rolled oats, chopped hazelnuts, honey, and olive oil. Mix well until the oats and nuts are evenly coated.
Sprinkle the oat and nut mixture evenly over the fruit layer in the baking dish.
Bake in the preheated oven for 25–30 minutes, or until the crumble topping is golden brown and crisp.
Remove from the oven and let it cool for a few minutes before serving. Enjoy warm, optionally with a dollop of yogurt or ice cream.