one recipe for fondant icing there are lots of different recipes but this is the one i have used in the past enjoy
Kneaded Fondant Icing
450 g (1 lb) icing sugar
1 medium egg white
50 g (2 oz) liquid glucose
colouring and flavoring
For rolling: icing sugar
1 Sieve the icing sugar into a bowl and make a well in the centre. Add the egg white and glucose.
2 Knead well until fondant is smooth. Add colouring and flavouring as desired.
3 Roll out on a board dusted with icing sugar.
Lift onto cake and smooth down sides. Trim off level with base of cake.
Liquid glucose can be purchased from a good chemist.
the icing should be like dough if it is to wet add more icing sugar.
https://whatscookingamerica.net/PegW/Fondant.htm
Give it a try, works great!!