Food blogger Brooke Edwards of Frost Me Up showcased this out-of-the-box technique that can make a cake's icing appear so smooth that it will look like it's been covered in fondant by a professional.

For the caramelized walnuts, tip the sugar and 2 tablespoons water into a pan and heat over a low heat until the sugar begins to melt. Increase the heat and cook the caramel to a dark golden colour ...