Beat eggs with sugar until creamy. Add cream and beat for a few minutes. In the meantime, peel apples and cut into slices. Then butter and flour a Bundt cake pan with a diameter of 24 cm.
Add flour and baking powder to the dough by hand. Finally, add apples and cinnamon. Bake in the preheated oven at 180°C (top/bottom heat) for about 40 minutes.
Prepare the icing by sieving powdered sugar into a bowl and slowly adding a little bit of water until the icing gets soft and drips from the spoon. Add a little bit of food coloring to get the desired color.
Pour the icing on the cold Bundt cake and decorate with colored sprinkles.