The Perfect Wintry White Cake | Fondant Snowflakes Garnish | SouthernLiving.com Dust work surface with powdered sugar. Roll out half of 1 (24 -oz) package white fondant to 1/4 inch. Cut fondant with snowflake or holly leaf cutters. Transfer to baking sheets; let dry for 12 hours. Add glimmer: Brush garnishes lightly with vodka. Sprinkle with edible glitter and sparkling dust.