Whatever you call this stuff, cream, icing, frosting or meringues, it is usually blocking somewhere that you need to go in your Candy Crush Saga Game!
To destroy cream you need to match candies in adjacent squares.
In the first picture below the cream at the top will vanish if you make a match beside it as it is only one layer.
However the cup cakes at the bottom need several matches beside them before they will disappear completely.
The second image shows the cup cakes and the numbers refer to how many times matches need to be made beside them to destroy the icing and clear the squares.
The third image shows the cupcakes partly destroyed.. On this level only two matches are needed to destroy the icing and as you can see some are partly matched.