No-Bake Custard Slice Recipe

This No-Bake Custard Slice is the perfect marriage of creamy, dreamy vanilla custard and golden, tender layers of graham crackers, all finished with a glossy sweet glaze. If you’re craving a show-stopping dessert but want a stress-free, oven-free process, this treat is for you: each cool, velvety bite delivers sweet nostalgia and pure comfort. Whether for easy entertaining or a simple family treat, this No-Bake Custard Slice will win hearts every time!

this Recipe

Ingredients You’ll Need

• Graham Cracker Layer:

  • 2 packets graham crackers or plain rectangular biscuits

  Vanilla Custard Filling:

  • 1 (3.4 oz) box instant vanilla pudding mix
  • 2 cups cold whole milk
  • 1 cup heavy cream
  • ¼ cup powdered sugar
  • 1 teaspoon vanilla extract
  • 1 tablespoon cornstarch (optional, for thicker filling)

  Glaze:

  • ½ cup powdered sugar
  • 1–2 tablespoons milk
  • ½ teaspoon vanilla extract

How to Make No-Bake Custard Slice

Step 1: Whisk Up the Vanilla Pudding

Start by pouring the instant vanilla pudding mix into a large mixing bowl and adding the cold whole milk. Whisk briskly for 2 to 3 minutes. It will thicken before your eyes—this is the creamy base of your No-Bake Custard Slice. If you’d like a firmer filling, you can whisk in a tablespoon of cornstarch at this stage.

Step 2: Whip the Cream to Fluffy Peaks

In a separate bowl, combine the heavy cream, ¼ cup powdered sugar, and 1 teaspoon of vanilla extract. Using a hand mixer or stand mixer, whip until stiff peaks form. This step brings lift, airiness, and a decadent mouthfeel to your custard layer.

Step 3: Fold the Cream into the Custard

Take your whipped cream and gently fold it into the thickened pudding mixture. Use a spatula and a light hand—this ensures that the final filling is cloud-like and smooth. Blend until you see no more streaks of cream or pudding.

Step 4: Assemble the Layers

Line the bottom of an 8×8-inch dish with a single layer of graham crackers or biscuits. Spread half of your custard mixture over this base, smoothing it out. Add another layer of crackers, then spoon on the remaining custard, finishing with a third and final cracker layer on top. Layering is key! It’s what creates that beautiful stratified look when you slice in.

Step 5: Glaze and Chill

For the classic glossy finish, stir together ½ cup powdered sugar, 1–2 tablespoons of milk, and ½ teaspoon vanilla extract until you have a silky glaze. Pour this over the top layer of crackers, spreading evenly all the way to the edges. Cover the pan with plastic wrap and refrigerate for at least 4 hours—overnight is ideal. This crucial chill time lets the No-Bake Custard Slice set up perfectly and the crackers soften to cake-like perfection.

How to Serve No-Bake Custard Slice

Garnishes

A little garnish goes a long way! Dust your No-Bake Custard Slice with extra powdered sugar for a snowy effect, or sprinkle with lemon zest for a pop of color and brightness. Fresh berries scattered on top provide juicy contrast and turn your slice into a true centerpiece.

Side Dishes

This dessert shines on its own, but you can pair it with a scoop of vanilla ice cream, a dollop of whipped cream, or even fresh fruit like sliced kiwi and strawberries for a beautiful contrast. A hot cup of coffee or robust black tea also brings out the vanilla notes beautifully.

Creative Ways to Present

For a special occasion, cut the No-Bake Custard Slice into small squares and serve on a platter lined with edible flowers or fruit slices. Mini trifle glasses are another striking option: simply layer bite-sized pieces with berries and extra whipped cream for a playful twist.

Make Ahead and Storage

Storing Leftovers

No-Bake Custard Slice keeps wonderfully in the fridge for up to 3 days. Cover tightly with plastic wrap or store in an airtight container to keep the layers moist and the glaze silky. You’ll find the flavors meld and deepen as it rests.

Freezing

If you need to make your dessert well ahead of time, you can freeze portions tightly wrapped in plastic and foil. Thaw overnight in the fridge—just note the texture may be slightly softer after thawing, but the flavor remains dreamy.

Reheating

There’s no need (or reason) to reheat No-Bake Custard Slice: it’s best enjoyed delightfully chilled, straight from the fridge! If it’s slightly frozen from storage, let it sit out for 15–20 minutes and it’s ready to enjoy.

FAQs

Can I use puff pastry instead of graham crackers?

Absolutely! Puff pastry sheets give a more traditional Australian flair and a crispier bite. Bake and cool the pastry before assembling, then layer just as you would with crackers.

How can I make the custard filling even thicker?

If you love a really firm slice, whisk in the optional tablespoon of cornstarch with your pudding mix, or reduce the milk slightly when preparing the pudding. Chilling overnight also helps set the layers firmly.

Can I prepare No-Bake Custard Slice the night before a party?

Yes! In fact, this dessert is even better when made a day ahead, allowing the layers to meld and the crackers to become perfectly soft and sliceable. Just keep it covered and chilled until serving time.

What flavor twists can I try?

Experiment with chocolate pudding and a splash of espresso for a mocha version, add a swirl of berry jam between layers, or infuse the filling with citrus zest for a summery feel. No-Bake Custard Slice is wonderfully adaptable!

How do I cut neat squares without making a mess?

Run a sharp knife under hot water and wipe dry before slicing to glide cleanly through the layers, and wipe the blade between cuts to keep those beautiful cross-sections intact.

Final Thoughts

If you haven’t tried a No-Bake Custard Slice yet, now’s the moment! It’s a treat that’s easy enough for any weekday but elegant enough for celebrations. I promise, every creamy, nostalgic bite will have you coming back for more—so save yourself a square before the platter disappears!

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