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    Home / Recipes / Dessert / Keto Caramel Slice (Millionaire's Shortbread)

    Keto Caramel Slice (Millionaire's Shortbread)

    March 4, 2022 by Keto Cooking Christian 4 Comments

    This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases, see Disclosure.
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    This ultimate homemade Keto Caramel Slice recipe, made with three decadent layers, is rich, delicious and guaranteed to be your next favorite low carb dessert.

    closeup of Caramel Slice squares stacked up
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    Jump to:
    • ❤️ Why You'll Love This Keto Caramel Slice Recipe
    • What’s in Millionaire's Shortbread
    • How to Make Caramel Slice
    • Variations of the Millionaires Shortbread
    • More Salted Caramel Recipes
    • More Keto Dessert Bars

    ❤️ Why You'll Love This Keto Caramel Slice Recipe

    • Buttery and sweet shortbread crust works as a delicious base
    • The caramel sauce is so nice and thick, it holds its shape when cut
    • Easy to make, but looks like it came from a fancy bakery
    4 caramel slice squares stacked on white plate

    There are desserts and then there are DESSERTS! This amazing recipe for Caramel Slice is also known as Millionaire's Shortbread for good reason!

    Thick, rich and decadent sugar-free salted caramel sauce is layered between a tender and flakey shortbread crust and a creamy chocolate top layer.

    As a little added touch, a pinch of flakey salt is sprinkled over the chocolate to give this dessert the perfect combination of sweet and slightly salty flavor.

    caramel slice squares stacked up on each other

    Whether you're looking for an extra special dessert recipe for a holiday party or just feel like making a guilt-free sweet treat to satisfy someone's sweet tooth, these Caramel Slice Bars will be a crowd-pleasing hit!

    What’s in Millionaire's Shortbread

    • Super fine almond flour
    • Oat fiber
    • Butter
    • Monk fruit/erythritol, powdered
    • Egg
    • Vanilla extract
    • Keto Salted Caramel
    • Sugar-free semi sweet chocolate chips

    *Exact measurements are listed in the recipe card below.

    How to Make Caramel Slice

    Preheat oven to 350°F.

    dry ingredients for crust in glass bowl

    Add the almond flour, sweetener and oat fiber to a large mixing bowl and whisk to combine.

    dry ingredients with 2 sticks butter egg in glass bowl

    Add in 1 cup of butter, egg and vanilla extract and mix until everything is well combined.

    caramel slice crust dough in glass bowl with spatula

    Press out the crust into a 9 x 9 baking dish lined with parchment paper, prick the bottom with a fork.

    shortbread crust unbaked in ceramic baking dish

    Bake for 20 minutes or until slightly golden and cooked through.

    shortbread crust baked in ceramic baking dish

    I made the caramel sauce as the crust was cooking, and it was ready just a few minutes after I pulled the crust out of the oven. 

    caramel sauce being dripped from spoon over saucepan

    Allow the crust to cool slightly, then pour the caramel sauce over and spread it out evenly.

    caramel layer of caramel slice bars in ceramic baking dish

    Let it sit at room temperature for 10 minutes, then chill in the fridge for at least 30 minutes and allow it to set before moving onto the chocolate layer.

    melted chocolate dripping from whisk over glass bowl

    Pour the chocolate chips and 2 tablespoons of butter into a heat proof mixing bowl set over a double boiler and stir just until the chocolate has melted.

    chocolate layer of Caramel Slice in baking dish with flaked salt on top

    Pour the chocolate over the caramel sauce and smooth using an offset spatula to get an even layer.  Sprinkle some flaked sea salt over the top and chill in the fridge for several hours or overnight before cutting into small squares.

    Caramel Slice stacked up on white plate

    This is where you have to be patient, because if you cut into it too soon, the caramel will ooze out and make a mess. 

    Should you keep Millionaires Shortbread in the fridge? How long can you store millionaire shortbread?

    To keep these bars fresh, you should store leftovers in an airtight container in the fridge for up to 5 days.

    4 caramel slice squares stacked on white plate
    Where does caramel slice originate from?

    Caramel slice is a dessert that originated in Australia. You may hear it referred to by several different names, caramel squares, caramel slice, millionaire's shortbread, millionaire's slice, or chocolate caramel shortbread.

    Even though the origin of Caramel Slice Bars is traced back to Australia, they are said to be adapted from a Scottish short bread all the way back to the 12th century, where they were topped with different kinds of fresh and dried fruits.

    Variations of the Millionaires Shortbread

    • Chocolate topping: This recipe uses sugar-free, semi-sweet chocolate chips. But you can use dark chocolate, milk chocolate or white chocolate. You can also use a combination of and make a chocolate swirl pattern.
    • Additional toppings: Some versions of Scottish caramel slice added fresh fruits before serving. You can also sprinkle chopped nuts to the top of the chocolate before it sets up.
    • Extracts: The shortbread crust uses vanilla extract, but if you want to add a slightly different flavor you could use almond extract instead. And for a more intense chocolate flavor, add a drop or two of coffee extract to the chocolate layer right before you pour it.
    closeup of Caramel Slice squares stacked up
    Why does my caramel slice not set? Why is my caramel slice runny?

    The number one reason caramel slice doesn't set is because the caramel sauce did not cook long enough. Don't rush cooking it. If it's not cooked long enough, your caramel slice will end up in a runny mess!

    Another main cause the bars may be loose is because you didn't allow them to chill long enough in the fridge.

    Can you freeze millionaire shortbread?

    You sure can. Take the chilled bars and double wrap them in plastic wrap. Slip them into a freezer-safe, air-tight container. They should freezer well for up to three months.

    Why is it called millionaire shortbread?

    Funny enough, the title comes from a play on words. Millionaire's Shortbread get their name because they are "insanely rich!"

    How do you cut millionaires shortbread neatly?

    First, make sure you allow at least a few hours for the caramel to firm up.  Then, using a sharp knife, cut them into small squares (they are rich) and wipe the knife clean between each cut.

    caramel sauce being spooned out of jar

    More Salted Caramel Recipes

    • Salted Caramel Cheesecake Mousse
    • Salted Caramel Collagen Muffins
    • Salted Caramel Cheesecake Bars
    • Salted Caramel Cookies
    caramel slice squares stacked up on each other

    More Keto Dessert Bars

    • Keto Chocolate Chip Cookie Bars
    • Keto Lemon Bars
    • Keto Blueberry Cheesecake Bars
    • Salted Caramel Bars
    • Vanilla and Chocolate Cheesecake Bars
    Keto Caramel Slice (Millionaire's Shortbread)
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    4 caramel slice squares stacked on white plate

    Keto Caramel Slice (Millionaire's Shortbread)

    This ultimate homemade Keto Caramel Slice recipe, made with three decadent layers, is rich, delicious and guaranteed to be your next favorite low carb dessert.
    5 from 1 vote
    Author: Julianne
    Servings 12
    Print Pin
    Save RecipeSaved!
    PREP 10 minutes mins
    COOK 20 minutes mins
    chill 2 hours hrs
    TOTAL 2 hours hrs 30 minutes mins

    Ingredients
     

    • 2 ¼ cups almond flour
    • ¼ cup oat fiber
    • 1 cup butter, room temperature
    • ½ cup powdered monk fruit/erythritol
    • 1 whole egg
    • 1 teaspoon vanilla extract
    • 1 batch Keto Salted Caramel Sauce
    • 9 ounces sugar-free chocolate chips
    • 2 tablespoons butter
    • Optional: flaked sea salt

    Instructions
     

    • Preheat oven to 350°F.
    • Add the almond flour, sweetener and oat fiber to a large mixing bowl and whisk to combine.
    • Add in 1 cup of butter, egg and vanilla extract and mix until everything is well combined.
    • Press out the crust into a 9 x 9 baking dish lined with parchment paper, prick the bottom with a fork and bake for 20 minutes or until slightly golden and cooked through.
    • I made the caramel sauce as the crust was cooking, and it was ready just a few minutes after I pulled the crust out of the oven. Allow the crust to cool slightly, then pour the caramel sauce over and spread it out evenly.
    • Let it sit at room temperature for 10 minutes, then chill in the fridge for at least 30 minutes and allow it to set before moving onto the chocolate layer.
    • Pour the chocolate chips and 2 tablespoons of butter into a heat proof mixing bowl set over a double boiler and stir just until the chocolate has melted.
    • Pour the chocolate over the caramel sauce and smooth using an offset spatula to get an even layer. Sprinkle some flaked sea salt over the top and chill in the fridge for several hours or overnight before cutting into small squares.
    • This is where you have to be patient, because if you cut into it too soon, the caramel will ooze out and make a mess. Store leftovers in an airtight container in the fridge for up to 5 days.

    Recipe Notes

    These are truly very rich little bars, living up to their name Millionaire's Shortbread.  Be sure to cut them into 12 bars, perhaps even 16 because they are very sweet.

    *Make sure to scroll up and read the post for substitutions, additions and helpful tips for making this recipe.

    Course Dessert
    Cuisine American
    Calories 355kcal
    Nutrition Facts
    Keto Caramel Slice (Millionaire's Shortbread)
    Amount per Serving
    Calories
    355
    % Daily Value*
    Fat
     
    34
    g
    52
    %
    Saturated Fat
     
    16
    g
    100
    %
    Carbohydrates
     
    8
    g
    3
    %
    Fiber
     
    4
    g
    17
    %
    Sugar
     
    1
    g
    1
    %
    Protein
     
    5
    g
    10
    %
    * Percent Daily Values are based on a 2000 calorie diet.

    *Nutritional data is provided as a courtesy and is accurate to the best of my knowledge. You can verify it using the nutrition calculator of your choice. All data is based on net carbs, without sugar alcohol: Swerve, Erythritol, Monk Fruit or Allulose.

    © Copyright for Keto Cooking Christian LLC. Please use the share buttons to share on social media, but please do not copy/paste the recipe.

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    Filed Under: Baking, Dessert, Oat Fiber, Posts, Recipes

    Bible verse of the day

    But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you.
    Matthew 5:44

    Reader Interactions

    Comments

      5 from 1 vote

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      Recipe Rating




    1. Amanda Miller

      September 09, 2023 at 8:21 pm

      5 stars
      In a word, FANTASTIC! I was afraid almond flour shortbread would be too dry, but this is like a low-carb Twix and such a delight. I love everything about it and will make this again for sure!

      Reply
      • Keto Cooking Christian

        September 11, 2023 at 11:03 am

        That's awesome. Thank you so much.

        Reply
    2. Jan

      March 14, 2022 at 10:26 am

      I have never used Oat Fibre.
      Is there a substitute?
      Will the base turn out OK without it?
      Thankyou! 😊

      Reply
      • Keto Cooking Christian

        March 16, 2022 at 8:50 am

        I have only made the cookie base with oat fiber so I can't say for sure how it will turn out. But most of the time, you can just omit the oat fiber with additional almond flour and a recipe will turn out okay.

        Reply

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    Julianne Walser KCC

    I'm Julianne, welcome! I offer tasty and indulgent Keto and Low Carb recipes that will never leave you feeling deprived!

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