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    Home » Type » Desserts » Cookies

    Twix Bar Cookies {aka Millionaire's Shortbread}

    Published: Nov 23, 2009 · Modified: Apr 21, 2022 by Faith · This post may contain affiliate links · 25 Comments

    Twix Bar Cookies

    Twix is my husband’s favorite candy bar, and I immediately knew I wanted to make him these bar cookies when I first saw the recipe for Millionaire's Shortbread on Joy of Baking.

    Millionaire's Shortbread is nothing other than shortbread topped with a layer of caramel and then a layer of chocolate - just like Twix! It's a pretty simple and straightforward recipe to make; the only thing that's even a little difficult/time consuming is the caramel filling.

    Twix Bar Cookies 2

    In her recipe on Joy of Baking, Stephanie uses sweetened condensed milk to make the caramel filling. She says to turn the sweetened condensed milk into caramel, you can either cook the milk down using a stovetop double boiler or the microwave. (I usually go with a stovetop double boiler, but to give you fair warning, it takes quite a bit of time and needs supervision, so plan on being in the kitchen for an hour and a half if you go with that method.)

    Paula Deen explains another method for caramelizing sweetened condensed milk. In her recipe for Banoffee Pie, Paula uses the oven to turn the sweetened condensed milk into caramel. To be honest, I've had sketchy success with this method in the past, which is why I usually stick with the stovetop double boiler method. Another interesting method for making caramel from sweetened condensed milk is to boil it directly in the can; The Tough Cookie describes this method here. (Just be forewarned, cans have exploded, so be sure you read her post fully and take precautions if you go with this method!)

    Twix Bar Cookies 3

    Last but not least, I recently stumbled on what looks like the easiest (and quickest!) method for making dulce de leche (aka milk caramel) from sweetened condensed milk. Claire Robinson uses a stovetop method but without the double boiler in her recipe for Millionaire's Shortbread, which is much faster! Next time I make these bar cookies I plan on trying this method.

    So, about these cookies...they're a cute homemade twist on a classic candy bar and they always go over well at parties. They're also a fun addition to a Christmas cookie platter!

    Twix Bar Cookies 4

    Print
    Twix Bar Cookies {aka Millionaire's Shortbread)
    Prep time:  15 mins
    Total time:  15 mins
    Yield: 1 (9 by 9-inch) pan, about 16 to 24 servings
     
    Ingredients
    • 12 tablespoons (1½ sticks) unsalted butter, at room temperature
    • ¼ cup white sugar
    • 1 teaspoon pure vanilla extract, divided
    • 1½ cups all-purpose flour
    • ¼ + ⅛ teaspoons salt
    • 1 (14 oz) can sweetened condensed milk
    • 6 oz good-quality dark or semisweet chocolate (I use 65% cacao)
    Instructions
    1. For the shortbread, preheat the oven to 350F; line a 9 by 9-inch pan with 2 pieces of parchment paper so that the paper hangs over the edges. Cream together the butter, sugar, and ½ teaspoon vanilla until light and fluffy. Add the flour and salt and stir to combine. Press the dough into the prepared pan and bake until lightly golden, about 20 minutes. Cool on a wire rack.
    2. For the caramel filling, add the sweetened condensed milk and remaining ½ teaspoon vanilla to a heatproof bowl set over a saucepan of simmering water (make sure the water level is low enough so that it isn't bubbling up onto the bottom of the bowl; periodically check the water level and add more as necessary so the pan doesn't run dry). Drape a piece of aluminum foil over the bowl and cook until the sweetened condensed milk is thickened and light caramel in color, about 60 to 90 minutes, stirring occasionally. If lumpy, transfer to a bowl and beat until smooth. Spread the caramel as evenly as possible onto the cooled shortbread and let the caramel cool to room temperature.
    3. Once the caramel is cool, melt the chocolate in a double boiler or microwave. Evenly spread the chocolate over the cooled caramel, and allow it to set before cutting into squares.
    4. Store leftovers wrapped in the fridge for up to 1 week.
    Notes
    Recipe adapted slightly from the recipe for Millionaire's Shortbread on Joy of Baking.
    3.5.3251

    Update (November 19, 2014): I made this dish again and snapped a few pictures, so I decided to update the photos in this post.

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    Reader Interactions

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      Recipe Rating




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    1. Veronica M. says

      January 22, 2010 at 3:15 pm

      This is so funny! I saw this pic in your header above so I hunted this down to see if it was what I thought it was. YUP! I just made these last week for Cookie Monday--they were so fabulous!! I make my dulce de leche by boiling it in the can on high for two hours. It always scares me but I make sure not to let the water line drop below the top of the can and I make 2-3 at a time so that I don't have to do it very often--LOL! Anyway, I love your pic, as usual.

      Reply
    2. Rose says

      December 12, 2009 at 2:12 pm

      Awesome.Calorie free too .Ha! Ha!

      Reply
    3. The Wifey says

      December 07, 2009 at 6:15 pm

      Hi! Just dropping by to let you know that I linked to your recipe and nine others in a blog post this week, and can't wait to try it out! Thanks for this awesome kitchen contribution!

      ---The Wifey

      Reply
    4. Chakh...le...Re!!! says

      December 01, 2009 at 4:44 pm

      lovely bars!! I am craving these now!!

      Reply
    5. Dina says

      November 26, 2009 at 4:31 pm

      yum! these look very good.

      Reply
    6. nora@ffr says

      November 25, 2009 at 1:24 pm

      i should try this for my daughters b' day party! :) m sure she will love it! thanx faith for sharig!!
      cheers!!

      Reply
    7. grace says

      November 25, 2009 at 6:09 am

      dang, lady! these look amazing, far better than a twix bar. i say that because more often than not, most of the twix ends up in my lap in the form of crumbs. :)

      Reply
    8. lynn@queenofthecastlerecipes says

      November 24, 2009 at 7:56 pm

      Mmmm, mmmm, these look good!

      Reply
    9. Jen says

      November 24, 2009 at 7:41 pm

      Who doesn't love Twix bars? Your husband and I are in agreement -yum! Perfect! The layering of cookie, caramel, and chocolate is exquisite!

      Reply
    10. ingrid says

      November 24, 2009 at 1:05 pm

      Thanks!
      ~ingrid

      Reply
    11. Blond Duck says

      November 24, 2009 at 12:53 pm

      Sweet wounded wuffles.

      Reply
    12. holly says

      November 24, 2009 at 12:12 pm

      ummm i just forwarded this onto my co-worker. looks ridic good!

      Reply
    13. admin says

      November 24, 2009 at 8:32 am

      Karyn -- Yay! I'm so glad you liked the cheesecake pastries! :)

      Chaya -- I googled "vegan caramel" and this recipe came up: http://dairyfreecooking.about.com/od/sweetsaucesfrostings/r/vegancaramel.htm. I hope this helps!

      Ingrid -- Yeah, hubby said they did taste like Twix, the major difference was the shortbread...this shortbread wasn't as crisp as the shortbread in the candy bars.

      Heavenly Housewife -- You're absolutely right! Another real hubby pleaser! ;)

      Reply
    14. Krista says

      November 24, 2009 at 7:07 am

      Mmm...those would be great at a cookie exchange!!!

      Reply
    15. Lorraine @ Not Quite Nigella says

      November 24, 2009 at 4:02 am

      I like Twix bars too so this is such a celver, delicious idea! I love recreating favourite chocolate bars :D

      Reply
    16. Heavenly Housewife says

      November 24, 2009 at 1:44 am

      Absolutely beautiful. They sell millionares shortbread here in the UK and hubby loves it. Imagine how impressed he would be if i made him these :)

      Reply
    17. Nutmeg Nanny says

      November 23, 2009 at 9:47 pm

      These look AMAZING! Feel free to ship me some...Hehehe :) I'm totally trying these for Christmas.

      Reply
    18. theUngourmet says

      November 23, 2009 at 9:20 pm

      Twix bars are right at the top of my favorite candy bar list. There are second only to Snickers. I love your homemade version! Yum! :D

      Reply
    19. ingrid says

      November 23, 2009 at 9:10 pm

      My one twin like twix bars. It would be fun to make him a homemade version. Did your hubby think these taste similar? Thanks for sharing!
      ~ingrid

      Reply
    20. Chaya says

      November 23, 2009 at 9:08 pm

      Is there something I can substitute for the condensed milk. I need non dairy. Any suggestions?

      Reply
    21. donna says

      November 23, 2009 at 8:22 pm

      I have got to try these asap! Id love to add them to my holiday tray, they sound fantastic!

      Reply
    22. Soumya says

      November 23, 2009 at 7:50 pm

      Ohh, thats a great recipe and wonderful presentation for the holidays, it tops my to do list.

      Reply
    23. Selba says

      November 23, 2009 at 7:38 pm

      Wow! Looks totally incredible delicious!!! I like twix :)

      Reply
    24. zoe says

      November 23, 2009 at 7:38 pm

      Oooh! I love twix! These wont last long!

      Reply
    25. Karyn Bernard (French Charming) says

      November 23, 2009 at 7:04 pm

      First of all I would like to say that your husband has excellent taste in candy bars! Oh...I can't wait to try this one as Trix is also my favorite candy bar! They look absolutely divine!!

      I wanted to tell you that your individual cheesecake pastries were an absolute hit at my office potluck...thanks for making me look good sweet friend!

      Reply

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