Easy Cheat's Vanilla Slice Recipe (2024)

Make this cheat’s Vanilla Slice recipe in just 5 minutes! With vanilla instant dessert mix sandwiched between two layers of crisp biscuits, it’s a no-fuss recipe guaranteed to impress.

Why We Love This

This is the easiest, quickest, hassle free vanilla slice recipe EVER. Just like our cheat’s custard trifle and super easy chocolate mousse, it’s as delicious as the real thing, for a fraction of the effort and time.

This simplified take on this classic Aussie bakery treat can be prepped and assembled in around 5 minutes, and needs just 1 hour to set rather than overnight.

There’s no eggs, no gelatine, and no stuffed up custard to worry about here. It’s a no-bake treat with no need to worry about cracking pastry or smooshing custard out the sides when cutting into slices either. Just stress-free deliciousness!

P.S. Love classic sweet slices? Try your hand at lemon slice, coconut ice or weetbix slice next!

What is Vanilla Slice?

This old-fashioned bakery treat is super popular across Australia and New Zealand. It’s usually enjoyed as a sweet snack rather than as a dessert (and more often than not after a piping hot beef pie or sausage roll for lunch!).

Also known as ‘custard slice’, it’s similar-ish in essence to a French dessert known as mille-feuille. The traditional vanilla slice recipe consists of a layer of set custard sandwiched between two layers of crispy puff pastry. Bakeries will often serve theirs with a layer of icing on top for extra sweetness.

Today’s cheat’s version is made with crisp square biscuits or sweet crackers (formerly lattice biscuits) instead of puff pastry, and instant dessert mix instead of homemade custard. This solves a lot of the niggly problems that can make vanilla slice more of a challenge to make at home.

Where We Learned This

Mum first taught us this recipe on a family camping trip. Since it’s so easy and involves no baking, she could whip it up in the caravan in no time. The whole tray disappeared during morning tea, so we were glad to steal a slice or two (and the recipe) before they even hit the table.

What You’ll Need

• Vanilla Instant Dessert Mix –We used Aeroplane brand. Cottee’s Instant Pudding Mix is another popular option and essentially the same thing. It’s the easiest and quickest prep for our cheat’s vanilla slice recipe, requires no cooking, and sets perfectly after just an hour in the fridge. You could use custard powder if you prefer – just cook it on the stove according to packet directions and allow it to cool before proceeding with the recipe below. If making homemade custard from scratch, make sure it’s cooked long enough until it’s nice and thick so it will set firm enough to make into a slice.
• Cream – We use thickened cream for this recipe, which is the same as heavy cream for our readers in the US/Canada. We don’t recommend pouring cream or whipping cream as they won’t give the right texture for the custard to set.
• Topping (Optional) – For this simplified recipe we prefer a quick sprinkling of icing sugar – it tastes and looks great for such a simple decorative effect. It’s also much less sweet than a traditional icing sugar glaze. For more topping and icing ideas, see our variations section below.

How to make:

1. Pour the milk and cream into a large mixing bowl or the bowl of a stand mixer. Add the vanilla instant dessert mix and beat until thick and creamy (around 1-2 mins).
2. Line a square baking dish with baking paper and place a 3×3 grid of lattice biscuits (sugar glaze down) into the tray. Pour whipped dessert mix into the centre, gently pressing it out towards the edges and smoothing out the top as you go.
3. Top with another 3×3 grid of lattice biscuits (sugar glaze up). Pop in the fridge for 1 hour to set.
4. Sprinkle with icing sugar, then cut into slices by gently running a knife between the biscuits.

Wandercook’s Tips

• Line the Baking Dish – Use a sheet of baking paper or aluminium foil that’s a bit wider than you’d normally use when lining a baking tray. This way you can use the edges to neatly pull the slices out of the tray.
• Sugar Side Out – Lattice biscuits have a sugar glaze on one side only. For the best looking slices, pop the sugar side down for the bottom later, and sugar side up for the top layer. If using baked puff pastry, use the cooked side in the same way.
• Don’t Over-Whip – Instant dessert mix only needs to be whipped for a minute or two before it’s thick and ready to use. If you over-whip, it just means the filling will look a little lumpier and less smooth, but will still be totally fine to use.
• Quick Set – If you need to shave off a bit of time, you can pop the tray of vanilla slices in the freezer for half an hour (after slicing) to help them set more quickly.

FAQs

Variations & Substitutes

• Puff Pastry –Swap the lattice biscuits for puff pastry sheets. Place them on a lined baking tray and prick holes with a fork all over the top so that they don’t puff up too much while baking. Bake for around 15-20 minutes (220˚C / 430˚F), then follow the recipe below as normal to assemble.
• Dairy Free – Swap out the milk for soy milk and cream for coconut cream. You’ll end up with just as creamy a finish with a hint of coconut.
• Instant Dessert Mix – Instead of vanilla, try it with strawberry or chocolate flavoured dessert mix instead.
• Extra Flavour – Try adding a tsp of vanilla, almond or lemon essence in with the instant dessert mix before whipping.
• Icing – It’s a popular tradition in some Aussie bakeries to serve vanilla slice with a passionfruit icing. You can make it from 100g icing sugar and 1 tbsp passionfruit pulp. Mix and slather a thin layer over the top and refrigerate to set before slicing into portions. If you don’t like passionfruit, try it with a splash of lemon juice instead.
• Leftover cream? Turn it into matchsticks or chocolate mousse!

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