There are no fancy ingredients involved so they’re super easy to make and will keep well for a few days or can be frozen making them a great prep-ahead treat. For more chocolate and caramel treats check out my Carmelitas and Toffee recipes they’re so delicious!
What you need to make this recipe
Butter – I use unsalted butter because additional salt is added, make sure your butter is at room temperature. Condensed milk – sweetened condensed milk is a key ingredient for making a super sweet, thick, and delicious caramel! Sugar – I use a mix of both granulated white sugar and brown sugar which gives a delicious caramel/molasses flavor. Chocolate – Millionaire’s shortbread is really rich so I like to use a less sweet tasting chocolate like semi-sweet or bitter-sweet. You can use good-quality chocolate chips for ease or chop up a good quality chocolate bar.
How to make Millionaire’s Shortbread
Cream the butter, sugar, and salt together then add the egg and vanilla.
Add the flour in batches and stir to combine.
Pat the shortbread into a lined baking dish and bake.
Meanwhile, make the caramel by adding butter, condensed milk, and sugar to a saucepan and heat until darkened and thick.
Pour the caramel over the shortbread layer and chill.
Make the chocolate ganache by adding the chocolate and cream to a bowl over a double boiler or microwave and melt. Spread over the chilled caramel and shortbread base and sprinkle with sea salt. Chill in the fridge until your millionaire’s shortbread is set.
Pro tips for making this recipe
Make sure you line your baking dish and leave an overhang so it’s easy to remove. Make sure you use room temperature butter it’s essential for making the shortbread! A sugar thermometer is really helpful for making caramel but it isn’t essential. When making the caramel make sure to stir it constantly so it doesn’t burn on the bottom. You can use less chocolate on top if you’d prefer a thinner layer. Make sure to chill the caramel layer before adding the chocolate or there’s a chance they will mix together and you won’t have even layers. Sea salt really enhances the chocolate flavor in millionaire’s shortbread so try not to skip it. I find it easier to cut the bars when they are chilled.
Why didn’t my caramel set?
Your caramel needs to reach a minimum of 224F to set so if you undercook it you’ll run into issues. A sugar thermometer makes things super easy here but if you don’t have one make sure the caramel starts to pull away from the edges of the pan and is really thick before removing it from the heat.
Are there variations?
The best way to change up millionaire’s shortbread is to experiment with different chocolate on top. Why not try swirling in some white melted chocolate which will create a fun pattern too! Check out my Scotcheroos, Pecan Pie Bars, or Peanut Butter Bars for something a little different.
How long do they last?
Store the squares in an airtight container there’s no need to refrigerate. They’ll keep well for up to 5 days.
Can I freeze them?
Yes, millionaire’s shortbread freeze really well but make sure to wrap them tightly in plastic wrap or foil and freeze them individually. Thaw them completely before serving. If you’ve tried this Millionaire’s Shortbread recipe then don’t forget to leave a rating and let me know how you got on in the comments below, I love hearing from you!
