Preheat the oven to 180C / 360F.
Scatter the apple slices into your ovenproof dish, drizzle with honey, pour over the apple juice and sprinkle over the cardamom.
Add all the ingredients for the oat topping to a bowl and stir well to combine. Spoon onto the fruit filling.
Bake for 25-30 minutes. Keep a watch after 20 minutes for any signs of burning. If the top is looking as though it could burn but the apples aren't softened, loosely place a piece of aluminium foil over the dish and bake until done.
