billionaire's shortbread
Given the title of this site, it stands to reason that the very first recipe should contain the most butter (two and a half cups, yo!) of possibly anything I’ve ever made. I made a batch a couple of weeks before the holidays, and my husband groaned and complained that I must be trying to kill him. He groaned and complained so much that I ended up parcelling it out as gifts at every opportunity. When I was packaging up the last pieces to give to our kids’ teachers on the final day of school before Christmas break, he suddenly looked devastated.

“What are you doing?”
“Just sending some treats to school.”
“Do we have any more of that?”
“No, this is it. You said that I was trying to kill you with it, remember?”
“Seriously? That’s the last of it?”
[Hangdog expression]

So then a few days later, I thought I’d surprise him with a fresh batch. And the groaning and complaining commenced afresh. Is it sick and wrong that I kind of dig it when people feel horribly conflicted about my baking? Probably. If you feel horribly conflicted about this recipe, I would be delighted to hear about it in the comments.

A few things to note about this recipe:

This is one of those desserts that looks trickier than it is. The shortbread and chocolate layers are ridiculously easy. Admittedly, the caramel has the potential to go sideways on you, but it’s really more time-consuming than difficult. It took about 15-20 minutes for the mixture to achieve the right consistency. The first time I made this, I found that I was obsessed with it being the correct colour. The recipe I worked with claimed the mixture would turn amber, but either I don’t know what amber is supposed to look like, or the original recipe creator didn’t, because my caramel never turned a proper amber (though its consistency and flavour were perfect, if I do say so). Anyway. The second time I made this, I just focused on the consistency. As soon as the mixture had thickened to a point where it was gooey but still runny enough to spread easily, I knew it was ready.

While experimenting with this recipe, I learned that you can melt chocolate way more easily in the microwave than the old-fashioned double-boiler route I’ve been a slave to in the past. The trick is to do it in 30-second bursts in a microwave-proof bowl, stirring well between bursts.

Also, I think you could make a gluten-free version of this by substituting gluten-free flour (such as Bob’s Red Mill all-purpose gluten-free baking flour) along with the recommended amount of xanthan gum. It’s not like the shortbread needs to get that much of a rise, since its main purpose is to act as a base for the caramel and chocolate layers, which are really the star of the show.

One last thing: The original recipe called for unsalted butter, but I’m one of those philistines who wings it in the butter department. I used salted butter in every layer, and it all worked fine.

One last thing, for real this time: Yes, I know, it’s normally called millionaire’s shortbread. But, you know, inflation. And did I mention the two and a half cups of butter?

Millionaire’s Billionaire’s Shortbread

Slightly adapted from this recipe via Annie’s Eats.


For the shortbread layer:

2 cups all-purpose flour
2 tsp. baking powder
¼ tsp. salt
1 cup (2 sticks) butter, at room temperature
½ cup sugar

For the caramel layer:

1 cup (2 sticks) butter, cut into pieces
1 cup sugar
4 tbsp. light corn syrup
2 (14 oz.) cans sweetened condensed milk

For the chocolate layer:

8 oz. semisweet or bittersweet chocolate, finely chopped
1 tsp. light corn syrup
½ cup (1 stick) butter, cut into pieces
Fleur de sel or sea salt, for sprinkling


For the shortbread layer:

  1. Preheat the oven to 325° F.
  2. Line a 9×13-inch baking pan with parchment paper.
  3. In a small bowl, combine the flour, baking powder and salt.
  4. Stir with a fork to blend, and set aside.
  5. In the bowl of an electric mixer, beat the butter and sugar on medium speed until well blended, about 1-2 minutes. With the mixer on low speed blend in the dry ingredients just until incorporated.
  6. Transfer the dough to the prepared baking pan and press in an even layer over the bottom of the pan. (It may seem really thin, which could tempt you to not press down as firmly as you should. Press away.)
  7. Bake 15-18 minutes or until golden.
  8. Transfer the pan to a wire rack and let cool completely.

For the caramel layer:

  1. Combine the butter, sugar, corn syrup, and condensed milk in a medium saucepan over medium heat.
  2. Heat, stirring occasionally, until the butter is melted.
  3. Increase the heat to medium-high and bring to a boil.
  4. Reduce the heat to maintain a simmer, stirring constantly.
  5. Continue simmering and stirring until the mixture thickens to a gooey-runny consistency. (It will firm up considerably after it cools.)
  6. Pour the mixture over the shortbread layer, smooth the top, and allow to cool completely and set. (I refrigerated it for about an hour. You want it to be cold to prevent the caramel from melting when you pour the melted chocolate over it later.)

For the chocolate layer:

  1. Combine the chocolate, corn syrup, and butter in a microwave-proof bowl.
  2. In 30-second bursts, heat the mixture. I just used my microwave’s shortcut button, which I believe is a pretty high setting. Make sure to stir well at each interval, until the chocolate is completely melted and the mixture is smooth. It took my machine about two and a half minutes to do the job.
  3. Pour the chocolate mixture evenly over the caramel layer and use a spatula to smooth the top.
  4. Allow to cool for about 5 minutes or so, and then sprinkle with fleur de sel. (It’s what all the cool kids are doing these days, I hear. It’s nice, but not totally necessary.)
  5. Chill in the refrigerator, covered, until ready to slice and serve (about half an hour or so, depending on your fridge).

Serving and storing:

The original recipe suggested cutting this shortbread into bars, but I opted to cut it into little 1.5 x 1.5-inch squares. They’re pretty rich (not that there’s anything wrong with that), so this size makes them a little less intimidating for the more timid souls. Also, this method gives you, like, a bazillion of these little flavour bombs. Looking at this bounty stacked in your biggest storage container, you’ll think to yourself, “This is how billionaire’s feel!”

I’ve successfully frozen and thawed these, and they’ve kept well in the fridge for a week or so (and counting). They’re pretty tasty when cold from the fridge, but if you want to really release the flavour and texture of the caramel, then I’d suggest pulling them out an hour before you plan to serve them.