Bakery Custard Slice

The Pastry Base: Preheat your oven to 200°C (400°F). Place puff pastry sheets on trays, prick them all over with a fork, and bake between two sheets of parchment paper with a heavy tray on top to keep them flat. Bake for 15 minutes until golden.
The Custard Mix: In a bowl, whisk the cornflour, sugar, and egg yolks with 1/2 cup of the cold milk until a smooth paste forms.
The Heat: Bring the remaining milk and vanilla to a simmer in a large saucepan. Gradually whisk the hot milk into the egg paste, then return the whole mixture to the saucepan.
The Thicken: Whisk constantly over medium heat until the custard “pops” and becomes very thick and glossy. This is the soooo good stage! Remove from heat and whisk in the butter.
The Assembly: Line a square tin with baking paper. Place one pastry sheet at the bottom. Pour the hot custard over the top and smooth it out. Top with the second pastry sheet (smooth side up).
The Set: Refrigerate for at least 6 hours (preferably overnight). This is a vital “regulation” for a clean slice!
The Finish: Whisk the glaze ingredients together and spread over the cold pastry. Slice with a hot, serrated knife.

Serving and Storage: Protecting the Flake

How to Serve

Serve chilled! For a classy look, use a ruler to ensure every slice is uniform. It is soooo good with a flat white coffee or as a chef’s kiss afternoon tea treat. If you’re feeling extra “bakery-style,” add a layer of whipped cream between the custard and the top pastry.

Storage Tips

Store in the fridge for up to 3 days. Note: The pastry will eventually soften from the moisture of the custard, but it remains soooo good even when the crunch fades slightly.

Tips: The “Hot Knife” Regulation

To get those classy look professional edges, dip a serrated bread knife in boiling water and wipe it dry between every single cut. This melts through the icing and cuts the pastry without squashing the soooo good custard out the sides!

Variations: Flipping the Classic

The Passionfruit Slice: The traditional Aussie favorite—use passionfruit pulp in the icing for a chef’s kiss tartness.
The Chocolate Custard: Whisk in 100g of dark chocolate into the hot custard for a soooo good cocoa twist.
The French Napoleon: Add three layers of pastry and two layers of custard for a towering, classy look.

Conclusion: A Slice of Pure Joy

The Bakery Custard Slice is more than just a dessert; it’s a nostalgic journey. It’s a soooo good recipe that proves you can achieve chef’s kiss results with a little patience and the right “thickening regulations.” Whether you’re making it for a party or a weeknight rescue treat, this slice is guaranteed to impress. Enjoy the wobble!

Frequently Asked Questions

My custard didn’t set! Why?

You likely didn’t cook the cornflour long enough. It must reach a “boil” (look for big bubbles) to activate the thickening soooo good power.

Can I use custard powder?

You can! Just follow the “heavy thickening” instructions on the tin, but adding egg yolks will always give it a more classy look and richer flavor.