Carrot Layer Cake with Cream Cheese Filling

The carrot sponge recipe is very adaptable. It can be baked in a tube pan and served plain as a coffee cake; it makes great muffins; and it can also be baked in sheets, cut into small squares, and topped with a rosette of cream cheese filling to use as a simple buffet item or snack cake. When the sponges are made into decorated layer cakes, it is necessary to level the tops before assembling. Baking powder and baking soda stop working at approximately 170°F(77°C); the batter next to the sid