Salted Cookie Butter Millionaire's Shortbread Recipe on Food52 (2024)

Bake

by: Jesse Szewczyk

December1,2022

4

6 Ratings

  • Prep time 4 hours 35 minutes
  • Cook time 2 hours 50 minutes
  • makes 24 bars

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Author Notes

Speculoos are lightly spiced cookies originating from Belgium. They’re crunchy, perfectly spiced, and understated. If you’ve ever snacked on free cookies during a long flight, chances are you’ve had speculoos. The cookies are delicious dunked into hot coffee or eaten all on their own, but even more tempting when pureed into a creamy, peanut butter-like spread called cookie butter. The indulgent, moreish spread has become increasingly popular throughout grocery stores in the States, and this recipe utilizes the beloved butter to bolster classic millionaire’s shortbread cookies with a spiced, nutty flavor.

A base layer of tender shortbread gets topped with a salted speculoos caramel that lets the flavor of the cookie butter shine. Two cookie butter-spiked ganaches—one made with dark chocolate and one with white—finish off the cookie bars to create a swirling, galaxy-like pattern. A final flourish of flaky sea salt balances out the sweetness and drives the salty-sweet flavor profile home. It’s a bit of a project, but one that is well worth the effort: The striking pattern and unexpected flavor profile will steal the spotlight at any cookie swap. You can feel free to break up the steps into multiple days, tackling just one layer at a time. (Adapted from recipes from Cookies: The New Classics and Cook’s Illustrated.)

Note: Speculoos cookie butter can be found in specialty grocery stores or easily ordered online. Biscoff and Trader Joe’s brand cookie butter would both work well in this recipe.
Jesse Szewczyk

Test Kitchen Notes

To bake these cookies alongside Jesse Szewczyk—and hear more about how this recipe came together—listen to the latest episode of our podcast, Play Me a Recipe. —Food52

  • Test Kitchen-Approved

What You'll Need

Ingredients
  • Shortbread Base
  • 1 2/3 cups(214g) all-purpose flour
  • 1/3 cup(67g) granulated sugar
  • 1/2 teaspoonkosher salt
  • 12 tablespoons(1 1/2 sticks/170g) unsalted butter, melted
  • 1 large egg yolk
  • 1 teaspoonvanilla extract
  • Salted Speculoos Caramel
  • 3/4 cup(175 grams) packed light brown sugar
  • 4 tablespoons(1/2 stick/57g) unsalted butter
  • 1/4 cup(59 ml) light corn syrup
  • 1 14-ounce can (414 ml) sweetened condensed milk
  • 1/3 cup(90 grams) speculoos cookie butter (see Note)
  • 1 teaspoonvanilla extract
  • 1 teaspoonkosher salt
  • Topping
  • 1/2 cup(about 3 ounces/85 grams) semisweet chocolate chips
  • 1/2 cup(about 3 ounces/85 grams) white chocolate chips
  • 4 tablespoons(59 ml) whole milk, divided
  • 2 tablespoons(36 grams) speculoos cookie butter, divided
  • Flaky sea salt, for sprinkling
Directions
  1. Make the shortbread base: Heat the oven 325°F. Grease an 8- by 8-inch baking pan with nonstick pan spray and line with parchment paper, leaving overhang on all four sides.In a large bowl combine the flour, granulated sugar, and salt. Add the melted butter, egg yolk, and vanilla extract and stir together until a soft dough forms.Transfer the dough into the lined baking pan and press into an even layer. Prick the top several times with a fork and bake until the shortbread is slightly puffed and golden brown in the center, 33 to 38 minutes. Remove from the oven and use the bottom of a measuring cup or a metal spatula to press down on the shortbread to compact it slightly. (This will prevent the bars from crumbling when sliced.) Let the shortbread cool for 30 minutes.
  2. While the shortbread is cooling, make the caramel: In a medium saucepan fitted with a candy thermometer, combine the brown sugar, butter, corn syrup, sweetened condensed milk, speculoos cookie butter, vanilla, and salt. Cook over medium-low heat, stirring often to prevent burning, until the mixture is smooth, glossy, and registers 240°F on the candy thermometer, about 8 to 11 mins. Pour over the shortbread base, spread into an even layer, and transfer into the fridge. Let cool for 1 hour.
  3. As the caramel is cooling, make the topping: Place both the white and semisweet chocolate chips in two separate medium, microwave-safe bowls. Add 2 tablespoons whole milk and 1 tablespoon cookie butter to each bowl. Microwave each bowl on high power in 10 second increments, stirring between each, until the chocolate is completely melted and the mixture is smooth, about 30 seconds total. Transfer the white chocolate ganache into a piping bag or zip-top baggie.
  4. Working quickly, pour the dark chocolate ganache over top of the caramel and spread into an even layer. Pipe thin, straight lines of the white chocolate ganache all going the same way. (You might not need all of the ganache.) Use a toothpick to drag it through the lines, alternating the direction you go each time to create a rough chevron pattern. Transfer the bars into the fridge and let set for at least 4 hours, preferably overnight.Sprinkle the top of the bars with flaky sea salt and cut into a 3 by 8 grid to make 24 bars. (For cleaner edges, feel free to trim off the border of the pan before slicing.) Serve chilled or at room temperature.

Tags:

  • Cookie
  • Biscuit
  • American
  • Dairy
  • Chocolate
  • Egg
  • Chill
  • Bake
  • Entertaining
  • Christmas
  • Christmas Eve
  • Holiday

See what other Food52ers are saying.

  • Ellen White

  • Cheryl Gregg

  • Lsd

Popular on Food52

3 Reviews

Ellen W. December 21, 2022

This is ABSOLUTELY DELICIOUS. My candy thermometer wasn’t moving quickly so I stopped trusting it and used my instant read for the caramel. Took the caramel off when it hit 240 on my instant thermometer and my candy thermometer still said 220 and the caramel has a perfect chew! I’m definitely making this again-it’s absolutely beautiful! My roomies couldn’t stop eating it 🤗

Lsd December 20, 2022

Quite phenomenal. The cookie butter made it even better. I followed directions as written. I was nervous it was going to be too sweet, and while this is a decadent treat, I didn’t feel it was crazy, over-the-top sweet. Maldon salt flakes on top is absolutely the “cherry” on top.

Cheryl G. December 17, 2022

This looked too delicious to not give a whirl (despite my hesitation to try an unreviewed recipe). But 240 on my candy thermometer left me with a tooth-breaking hard caramel that I didn't want to risk giving guests. I instead found another recipe that suggested 225, which left me with a gooier (and safer) bar.

Salted Cookie Butter Millionaire's Shortbread Recipe on Food52 (2024)

FAQs

Is salted or unsalted butter better for shortbread cookies? ›

Butter – You'll need salted butter that's at room temperature. It can take anywhere from 30 minutes to 1 hour to bring the butter to room temperature, so make sure you give yourself enough time. If you don't have salted butter, unsalted butter will also work, simply add about ¼ teaspoon of salt to the cookie dough.

Why is it called billionaire shortbread? ›

The name "millionaire's shortbread" appears to have originated in Scotland. The "millionaire" prefix to millionaire's shortbread or millionaires slice implies a level of decadence and wealth to the sweet treat, that it is an upgrade from regular shortbread.

What happens if you put too much butter in shortbread? ›

Greasy mess: Extra butter means more fat, making the dough greasy and difficult to handle. Spreading like crazy: Cookies lose their shape, spreading thin and flat instead of staying nice and round. Uneven baking: The excess fat can burn easily on the edges while leaving the center undercooked.

What's the difference between butter biscuits and shortbread cookies? ›

As the name suggests a butter cookie has a high proportion of butter. However, unlike a shortbread the amount of flour and sugar used is increased meaning they hold their shape more effectively.

What happens if I use salted butter instead of unsalted in cookies? ›

All other factors being equal, using salted butter instead of unsalted butter in a recipe will result in a baked good containing more salt. If you want or need to use salted butter in place of unsalted butter — and the recipe calls for adding salt — omit the salt or use less salt than is called for in the recipe.

What happens if I use salted butter instead of unsalted? ›

Both salted butter and unsalted butter can be used interchangeably in any recipe, but if the recipe calls specifically for unsalted butter, it's probably because the recipe has been tested with it and is preferred for that particular recipe.

Why do Scottish people eat shortbread? ›

In ancient Scottish folklore, sun-shaped cakes, such as shortbread, had magic powers over the Sun during the Scottish New Year's Eve.

What is shortbread called in America? ›

Americans are the outlier on how we use "biscuit"

To most of the rest of the English-speaking world, a biscuit is what Americans would refer to as either a cookie or a cracker. Biscuits can be sweet (shortbread) or savory. They're baked in the oven, and they're crisp, not chewy.

What's the difference between millionaire shortbread and billionaire shortbread? ›

What's the difference between millionaire shortbread and billionaire shortbread? Millionaire shortbread has a caramel centre, billionaire shortbread has a decadent salted caramel centre. Can shortbread biscuits be frozen? Yes shortbread cookies and biscuits (even with caramel and chocolate) freeze perfectly.

What not to do when making shortbread? ›

The key with shortbread is not to overhandle it. Make the dough exactly as instructed, but don't mess around making shapes or over rolling the dough - you will end up with delicious but tough biscuits. Stretching and pulling the dough activates the gluten in the flour, making chewy cookies and not crisp ones.

What is the mistake in making shortbread? ›

The most common mistakes when making shortbread are over-working the dough, and incorporating too much flour.

What is the secret to good shortbread? ›

Tips To Make the Best Shortbread Cookies
  • Choose High Quality Butter. No matter what brand of butter you buy, if it's real butter, you can rest assured that it's the best. ...
  • Keep Ingredients Simple. ...
  • Add Flavor. ...
  • Don't Overwork. ...
  • Shape Dough. ...
  • Chill Before Baking. ...
  • Bake Until Golden. ...
  • Add Finishing Touches.

What's the difference between Scottish shortbread and regular shortbread? ›

As mentioned above, the main differences between the two styles of cookies are butter content and inclusion of leavening agents. These differences result in very different texture and taste experiences. No matter your preference, you can be sure to get a quality product from Walkers Shortbread.

What is shortcake vs shortbread? ›

Shortbread is similar to shortcake but doesn't include baking powder. Lots of rich butter gives shortbread a high fat content, resulting in a fine, crumbly texture. Shortcake and shortbread biscuits are delicious on their own, with fruit and cream, or simply topped with a delicate dusting of sugar.

Why use unsalted butter in shortbread? ›

Unsalted butter for best results

Use unsalted butter for balanced flavour. Unsalted butter was traditionally used in baking because it was a superior product to salted - salt is used as a preservative so unsalted butter was thought to be fresher.

What is the secret to making good shortbread cookies? ›

Tips To Make the Best Shortbread Cookies
  1. Choose High Quality Butter. No matter what brand of butter you buy, if it's real butter, you can rest assured that it's the best. ...
  2. Keep Ingredients Simple. ...
  3. Add Flavor. ...
  4. Don't Overwork. ...
  5. Shape Dough. ...
  6. Chill Before Baking. ...
  7. Bake Until Golden. ...
  8. Add Finishing Touches.

What are common mistakes when making shortbread? ›

The most common mistakes when making shortbread are over-working the dough, and incorporating too much flour. The less you work the dough, the more crumbly and melt-in-your-mouth your shortbread cookies will be.

References

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