Hi @Anupama Joshi,
I don't particularly like the taste of fondant either. Especially when he's so thick on the cookies. If you are looking for a softer alternative, I can recommend adding modeling marzipan! Or rather, 2/3 modeling marzipan, 1/3 fondant. It tastes like marzipan. However, you don't get pure white with it and with lighter colors you can also see the tiny almond pieces in the marzipan. And: it can only be painted with powder paints. But it tastes good and stays soft! I would like to show you an example of my marzipan fondant:
The cones and holly leaves are made of marzipan with fondant.