The Easiest Vanilla Slice Ever

A no-bake Australian vanilla slice: two layers of crackers sandwiching gelatine-set vanilla custard, topped with lemon icing. The crackers soften overnight in the fridge, the icing cracks when you cut it. Lunchroom nostalgia, scaled for a tray.

The vanilla slice (also called the snot block in Australian schoolyard slang, a term of affection rather than insult) is the bakery-counter classic that has lived in Australian cake shops since the post-war years. The structural pattern is consistent across regional variations: two layers of pastry or biscuit sandwiching a thick set custard, the whole thing topped with sweet glace icing in either passionfruit or lemon flavour.

Using crackers (Sanz Crackers here, a gluten-free brand; or any thin, light, flat biscuit cracker) instead of the traditional puff pastry is the home-baker shortcut that delivers most of the textural pleasure without the puff-pastry preparation. The crackers soften overnight in the fridge as they absorb moisture from the custard, becoming slightly cake-like; the final slice cuts cleanly and holds together on the spoon.

The gelatine-set custard (rather than the traditional cooked egg custard) is the second shortcut. Warm custard whisked with bloomed gelatine sets cold in the fridge into a sliceable, scoopable layer that holds its shape against the crackers; no constant stirring over a bain-marie required. Lemon icing on top (icing sugar mixed with lemon juice until pourable, then dried to a glossy crust) provides the bright citrus counterpoint to the rich custard. Cut into squares, eat from a paper plate at a netball-club afternoon tea. Pure nostalgia.