Millionaire’s Shortbread
Think of this Millionaire’s Shortbread as like a high-quality scratch-made Twix bar. Buttery shortbread is topped with golden dulce de leche and chocolate glaze, balanced to perfect proportions for every bite.
These bars remind me so much of a Twix bar, only being homemade and all, they are clearly a million times better.
(hehehe…get it? A million? Okay, I’ll stop).
Seriously though, these are soooooooo good.
The layers and ingredients involved are simple, but the end result is truly more than the sum of its parts.
Why This Recipe Is The Best
Totally spot-on proportions: I did multiple rounds of recipe testing to get the proportions perfectly balanced, which makes ALL the difference for how it tastes. I’ve made a lot of bar desserts on this blog, like these Cookie Dough Cheesecake Bars and my Chocolate Peanut Butter Marshmallow Squares, and I’ve learned that if something has too much chocolate, not enough filling, or something else out of whack, you don’t get that harmoniously balanced bite.
Only 7 ingredients: Millionaire’s shortbread is a 3-layer bar that only calls for 7 ingredients total, which is pretty darned good in terms of simplicity. It’s amazing how a dessert can be so richly flavorful and delicious but also so minimal.
You can make it ahead, and it travels well: It’s always nice to make food ahead of time so you can grab and go when you’re ready, and this sweet treat holds beautifully in the fridge until you’re ready for it. You can even freeze it too.
Insanely delicious: Arguably the most important thing, these millionaire’s shortbread bars are crazy good, and one of my absolute favorite recipes on the blog. Because the bar has THREE elements with the chocolate, caramel, and shortbread, you get a ton of different textures and flavors that play off each other in a harmonious way.
This dessert is truly a perfectly balanced trifecta!
You can see above that the thickest layer is the shortbread, which is intentional because it’s the least sweet, then there’s a generous but not too thick layer of dulce de leche, with a thin layer of rich and buttery chocolate on top, that compliments the other two layers without stealing the show.
How to Make It Step by Step:
Plan the Dulce de Leche:
Before you get started, you need to plan how you’ll come up with the dulce de leche for the middle layer.
Sometimes you can find it at the store, but usually you have to make your own from sweetened condensed milk. I do this for my Banoffee Pie too.
The safest way is to pour two cans of sweetened condensed milk into a double boiler setup (I use a large bowl and a saucepan), and let it cook gently for 3 hours over medium heat, until thick and caramelized.
I’ve included a quicker but riskier method in the recipe box, if you want to go that route, but I recommend planning ahead and doing the safe way.
You’ll know it’s done when it has a deep butterscotch color. No candy thermometer needed!
Make the Shortbread Layer:
While that cooks, work on the shortbread base. Much like my butter swirl Shortbread Cookies, this shortbread will have a more crunchy than soft texture.
Beat softened unsalted butter around the bowl of a stand mixer with the paddle attachment, then beat in sugar, and an egg yolk:
Note that you CAN use a hand mixer here, but if you have one, the stand mixer is better.
Add all-purpose flour to the bowl:
Mix the flour in until a crumbly dough forms, scraping down the sides as needed:
Press the shortbread dough into a parchment-lined 9×13 metal baking pan, using your fingertips to flatten it into an even layer:
Believe me, it’s easiest to press out the shortbread mixture with your fingers versus something like a spatula or the bottom of a measuring cup.
Prick the dough all over with a fork:
Bake for about 20 minutes, until the shortbread crust is golden brown on the edges:
Let the shortbread cool for about 15 minutes.
Add the Dulce de Leche:
Once the sweetened condensed milk has turned into thick, caramelized dulce de leche, spread it evenly on top of the cooled baked shortbread:
Refrigerate the bars to chill the caramel layer slightly.
Add the Chocolate Layer:
Finally, melt together some dark chocolate chips and butter and spread that over the dulce de leche:
Refrigerate the bars for an hour to firm up the melted chocolate, then use the parchment paper to lift the bars out onto a cutting board.
Then it’s really easy to cut into whatever shape you’d like:
I like caramel squares best.
Add Salt to Make it Pop
While totally optional, I think a sprinkle of sea salt on top is incredible here, to contrast the sweetness of this decadent treat:
The flaky sea salt on top of the layer of chocolate looks nice and fancy too.
Enjoy your millionaire bars! They are especially great for a Christmas cookie tray, along with Chocolate Crinkle Cookies and Snowball Cookies.
Recipe FAQ:
The bars can be kept at room temperature for up to 3 days. Or, they can be refrigerated for 1 week, or frozen for up to 2 months. Store in an airtight container or tightly wrapped with plastic wrap.
The bars will freeze beautifully for up to 2 months, just make sure it’s stored in an airtight container because the caramel and chocolate will easily absorb off flavors from the freezer.
You don’t want the bars to be too cold when you try to cut them. As the recipe states, only refrigerate the bars for 30 minutes for the caramel, and an hour for the chocolate to harden. Then, run a sharp knife for a minute under hot water to warm it up, then dry it with a clean kitchen towel, and slice.
Because the delicious caramel is so sweet, I like to use bittersweet chocolate. However, you may use milk chocolate, or even white chocolate, if you prefer.
Enjoy, and make sure to try some of my other favorite desserts as well, like Rice Pudding, Peanut Butter Cookies, and Baklava.
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Millionaire’s Shortbread
Ingredients
For the Shortbread:
- 1/2 cup granulated sugar
- 1.25 cups unsalted butter softened (2.5 sticks)
- 1 large egg yolk
- 2.5 cups all purpose flour (356g by weight)
For the Dulce de Leche:
- 2 14-ounce cans sweetened condensed milk
For the Chocolate Glaze:
- 6 oz dark chocolate chips (60 to 70% cacao) (170g by weight)
- 1/2 cup unsalted butter cut into cubes
- sea salt for garnish optional
Instructions
- Plan the Dulce de Leche: If you can find dulce de leche at the store, you may use that instead, but usually you have to cook your own from cans of sweetened condensed milk. The safest way: Place the sweetened condensed milk in a double boiler setup, by setting a glass heatproof bowl on top of a saucepan with two inches of simmering water. Make sure the water doesn't touch the bottom of the bowl. Cook for 3 hours, until thick and butterscotch colored, stirring every hour. You may need to refill the water once or twice. Let cool.The impatient, riskier way: You can cook the sweetened condensed milk in a nonstick saucepan over medium heat for about 15-20 minutes until thick and caramelized, but you MUST stir constantly with a spatula, or it will burn. Let cool.
- Preheat the oven to 350 degrees F.
- For the shortbread: it is best to use a stand mixer if you have one, but this may all be done with a hand mixer as well. In a stand mixer fitted with the paddle attachment, spread the butter around the bowl by mixing for about 10 seconds on medium. With the mixer still on, pour in the sugar, and beat until the sugar and butter are blended. Briefly beat in the egg yolk until incorporated, then mix in the flour, scraping down the sides of the bowl as needed, until a crumbly dough forms.
- Line a 9×13 inch metal baking pan with parchment paper, then press the dough out evenly using your fingertips. Prick the dough all over with a fork, and bake for 20-22 minutes, until lightly golden brown. Let the shortbread cool completely on a wire rack, about 15 minutes.
- Spread the dulce de leche evenly on top of the shortbread layer, then refrigerate for 30 minutes.
- For the chocolate layer: In a heatproof bowl, combine the dark chocolate chips and butter, and microwave in 30 second intervals until it's almost smooth. Err on the side of microwaving less, so you don't risk overheating the chocolate. I pull it out when the chocolate chips are almost melted, and usually if I keep stirring for a minute, the residual heat will melt it to a smooth consistency. Pour the mixture over the chilled dulce de leche layer and spread it evenly with a spatula. Refrigerate for an hour until the chocolate glaze hardens.
- Once the bars have chilled, cut into squares and serve. Enjoy!
Notes
Nutrition
Nutrition is estimated using a food database and is only intended to be used as a guideline for informational purposes.
32 Comments on “Millionaire’s Shortbread”
A tip for making the Dulce de Leche. The easiest way to make it is in the can. Just before the holidays I will make 4-6 cans by removing the labels and immersing them in water. Cover with at least a couple inches then turn it on simmer. Check back every 30 min. or so to make sure it has enough water and has enough water on top. Depending on how hard you simmer it it should be deep golden in about 5-6 hours. I go for medium/low about a 4 on my stovetop. It seems like a long time but it is one thing I can do while cleaning the house for guests. Once they are done I can store them in the fridge till I am ready to use them. They last week’s, even a couple months and I have something I can pull out at a moments notice. I have heard all day (8 hrs.) in the crock pot works well too. No mess, no fuss either way. I have never had it turn too dark but every now and again it may not be as dark as I like it so I will pour a can in the pan for a few extra minutes of carmelization.
Hi Christy, as I understand it this is something the manufacturer’s say not to do, because the can may explode during the process. It’s probably a rare circumstance I would imagine, but I think that’s why the authors of the book caramelize it outside of the can. Thanks for sharing!
I look forward to trying this but I’m wondering if 2 cans of dulce de leche can be used (it’s available where I live) so one can skip cooking the sweetened condensed milk? Has anyone tried this? Thanks for a great website with so many good recipes – still loving the whole wheat pancakes!
I don’t see why not, so sure! Enjoy!
these look amazing!! Thanks!
These look wonderful!! Although I’m not the biggest fan of dark chocolate. Do you think these would work with milk chocolate?
Thanks! You can absolutely use milk chocolate. The only reason I used dark is because milk is a little sweet for me, but by all means, make it how you like it! Let me know how it goes =)
Yum – these looks great! Definitely want to try to make these:)
Well – this looks and sounds absolutely delicious!!!!
The shortbread and caramel layers are in the fridge cooling as we speak – just one more layer to go! I used coconut sugar instead of regular in the shortbread, raw chocolate sauce instead of dark chocolate and agave nectar instead of corn syrup in the chocolate glaze. I shall report back soon on how it turns out 🙂
It came out great! Everybody loves it 🙂 Thank you for the recipe!
I’m so glad it turned out well Jennifer! I wasn’t sure how the agave and all that would work, and I’m glad to know I can make those substitutions if I want to. Thanks!
🙂 Great blog, Joanne. It has inspired me to start my own!
I would love the link so I can check it out! =) I hope you enjoy blogging as much as I do!
YUM! Seriously. Yum. Shortbread, dulce de leche, chocolate? Yes! 🙂
Oh wow! It kind of looks like tiramisu!
Wow! I am a huge shortbread fan plain and simple! But the addition of dulce de leche and that thick beautiful layer of chocolate on the top! This page has been bookmarked! : )
Now that some seriously good looking shortbread! Makes sense though, because your dough looks moist and perfect. I’m sure these wouldn’t last long at my house either. 🙂
Oh it definitely won’t last 4 minutes with me! These look SO delicious. I love the layers!
These look amazing! I adore shortbread and chocolate. Dulce de leche is always an added treat. What a fabulous take on Twix bars!
I also try to stay away from the nasties like hydrogenated oils and preservatives, etc. and therefore don’t berate myself for eating (sometimes too many) homemade sweet items, because at least I know exactly what’s gone into it! I think at the end of the day, that’s what counts…the quality.
Printing this one out to try!!!
Wow-that is such a great picture, those layered bars are calling my name! I love this combination and I am sure that they beat a manufactured Twix bar any day. Great post
You got me at dulce de leche……