Preheat the oven at 175 degrees Celsius.
Butter a round baking form with removable edges.
Sprinkle the bread crumbles in the baking forms bottom and edges.
Melt the margarine in a casserole, take away the casserole from the stow. Let the melted margarine reach medium temperature.
Stir the melted margarine and the sugar fluffy with an electrical mixer.
Add the eggs, milk, flour, baking powder and half of the cinnamon in the batter and stir it well together.
Pour the batter in the baking form.
Peel and cut the apples in thin slices.
Put carefully the apple slices tight together in the baking form.
Place the cake in the lower part of the oven for approx forty minutes.
Take out the cake and let the cake cool down.
Before serving it take away the edges from the baking form. If you want to serve the cake on a serving plate make sure the apples are turned upwards.