Enjoy this indulgent Millionaire’s Slice recipe

If you love decadent, buttery, melt-in-your-mouth desserts, the classic Millionaire’s Slice is a must-make. This iconic treat — featuring a crumbly shortbread base, rich caramel centre and glossy chocolate topping — is beloved across Australia, the UK and New Zealand. Its name reflects exactly what it tastes like: luxurious, rich, and indulgent enough to make you feel like a millionaire.

Originally created in Britain as a more extravagant version of a simple caramel shortbread, the slice earned its name because its ingredients were considered “rich” both in flavour and cost compared to everyday baking. Over time, it became a lunchbox favourite, a café staple, and a go-to slice for home bakers who want maximum wow factor with minimal fuss.

This recipe gives you the perfect balance of crisp base, silky caramel and chocolate that doesn’t crack when you cut it. Let’s dive in.

Millionaire’s Slice Recipe
Ingredients

Shortbread Base
1 cup (150g) plain flour
½ cup (110g) caster sugar
½ cup (115g) unsalted butter, melted
Pinch of salt
Caramel Layer
1 can (395g) sweetened condensed milk
½ cup (125g) unsalted butter
½ cup (110g) brown sugar
2 tbsp golden syrup
1 tsp vanilla extract
Chocolate Topping
200g milk or dark chocolate, chopped
1 tbsp vegetable oil or butter (to prevent cracking)

Method

1. Make the Shortbread Base
Preheat oven to 180°C (160°C fan-forced).
Line a square 20cm baking tin with baking paper.
Mix flour, sugar, melted butter and salt until combined.
Press firmly into the base of the tin.
Bake for 15–18 min, until lightly golden.
Set aside to cool.
2. Cook the Caramel Layer
In a saucepan, combine condensed milk, butter, sugar and golden syrup.
Stir continuously over medium heat for 8–10 minutes until thick, smooth and lightly golden.
Add vanilla extract.
Pour over the cooled shortbread base and smooth the top.
Bake for 10 minutes to set.
Cool completely before adding the chocolate layer.
3. Add the Chocolate Topping
Melt chocolate and oil together in a microwave or double boiler.
Pour over the cooled caramel and spread evenly.
Chill for at least 2 hours.
Remove from the tin and cut with a warm knife for clean slices.

Why Is It Called Millionaire’s Slice?
The name comes from the idea that the dessert is “richer” than a traditional caramel shortbread—both in taste and ingredients. With its thick layer of buttery caramel and generous chocolate topping, it was once considered an extravagant, almost luxurious treat.

Over the years, the name stuck, and today it simply represents a slice that feels indulgent, special, and worthy of any celebration.