For the millet-apple casserole, wash the millet in a fine sieve.
Bring the soy drink to the boil, turn off the heat. Stir in millet and cinnamon and a pinch of salt and let it swell on the still warm stove top, covered, for about 20 minutes.
Meanwhile, peel the apples and cut into wedges.
Grease a baking dish. Fold the maple syrup and soy flour into the millet mixture and layer alternately with the apple slices in the oiled baking dish.
Bake the millet-apple casserole at 180°C degrees top/bottom heat for about 25 minutes.