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Peanut Butter Millionaire Shortbread Bars

September 21, 2015 By Kerry Cooks 10 Comments

Peanut Butter Millionaire Shortbread Bars - SO addictive!

Peanut Butter Millionaire Shortbread Bars - SO addictive!

Peanut Butter Millionaire Shortbread Bars - SO addictive!

If you LOVE Chocolate Caramel Shortbread, you HAVE to try this new version with peanut butter swirled caramel – sooo good! Crumbly, soft shortbread biscuit, gooey peanut butter salted caramel, and it’s all topped with plenty of chocolate.

A few months ago, I was passing through a local farmers market when I spied some amazingly delicious looking treats. Since my husband is a fan of Chocolate Caramel Shortbread (also known as Millionaire’s shortbread, the delicious combination of shortbread, caramel, and chocolate), I picked up a white chocolate caramel shortbread for him, then strolled away.

Five minutes later, I went back to buy myself a peanut butter millionaire’s shortbread! I shared a picture on my Instagram and Facebook, and my friends reactions were more than enough to convince me to give Peanut Butter Millionaire’s Shortbread a go myself at home.

Peanut Butter Millionaire Shortbread Bars - SO addictive!

Making these gorgeous peanut buttery squares involves a few steps – none of them are difficult at all. and most are really quick. The shortbread layer – just butter, sugar, flour and vanilla – is mixed up in a moment, then pressed into the bottom of a 9 x 9 inch pan and baked. Bake the shortbread until it’s just starting to become very slightly browned – it is cooked, and it will set as it cools, but taking it out of the oven at this stage will ensure it keeps the lovely crumbly texture.

The salted caramel layer is the most time-intensive part of making these squares. We need it to be really thick so that is slices up tidily and doesn’t ooze out everywhere. DO NOT be afraid to keep on cooking the caramel until its the consistency that you want it. The caramel is made from melted butter, sugar and condensed milk (plus salt) which we’ll cook for 30-45 minutes until it gets really thick – see this video for how thick mine was (this is when it was still warm – it thickens up more more as it cools).

You need to keep cooking it on a low heat (though it will be bubbling away), stirring constantly until it is the consistency of thick gravy. Then, pour immediately into a heatproof bowl – as it cools it will become even thicker. It will take around an hour in the fridge to cool completely – or pop into the freezer if you’re on a deadline.

I made my caramel salted with the addition of about a tablespoon of sea salt – it goes really well with the caramel, peanut butter and chocolate flavours, but you can leave this out if you prefer.

Peanut Butter Millionaire Shortbread Bars
2015-09-20 20:58:14
Yields 15
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Save Recipe
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Prep Time
50 min
Cook Time
20 min
Prep Time
50 min
Cook Time
20 min
489 calories
50 g
66 g
31 g
6 g
18 g
102 g
535 g
39 g
1 g
10 g
Nutrition Facts
Serving Size
102g
Yields
15
Amount Per Serving
Calories 489
Calories from Fat 271
% Daily Value *
Total Fat 31g
47%
Saturated Fat 18g
92%
Trans Fat 1g
Polyunsaturated Fat 2g
Monounsaturated Fat 8g
Cholesterol 66mg
22%
Sodium 535mg
22%
Total Carbohydrates 50g
17%
Dietary Fiber 2g
7%
Sugars 39g
Protein 6g
Vitamin A
15%
Vitamin C
1%
Calcium
10%
Iron
5%
* Percent Daily Values are based on a 2,000 calorie diet. Your Daily Values may be higher or lower depending on your calorie needs.
Does this look wrong?
For the shortbread base
  1. 150g / 5.3 ounces / 1 stick plus 3 tbsp unsalted butter, softened
  2. 50g / 1.7 ounces / 1/4 cup golden caster sugar
  3. 160g / 5.6 ounces / 1 1/3 cups plain flour
  4. For the caramel peanut butter layer
  5. 1 397g can condensed milk (normal sized can)
  6. 150g / 5.3 ounces / 1 stick plus 3 tbsp unsalted butter
  7. 150g / 5.3 ounces / 3/4 cup golden caster sugar
  8. 1 tbsp sea salt
  9. 4 tbsp peanut butter
For the chocolate layer
  1. 100g / 3.5 ounces / 1/2 cup milk chocolate
  2. 200g / 7 ounces / 1 cup plain chocolate
Instructions
  1. Instructions
  2. Preheat your oven to 180C/gas mark 4/350F and prepare a square or rectangular tin that's roughly 9 inch square (if you use a smaller tin, your Shortbread will just be thicker).
  3. To make your shortbread base, combine the very soft butter with the sugar, and then mix in the flour until you have a delicious mess. Pop into your tin, and work into the corners with the back of a wet spoon (it's sticky!). Prick with a fork all over, and bake for 25-30 minutes (depending on oven shelf - mine was on the middle shelf) or until very lightly golden brown (see photo in post).
  4. Remove and leave to cool COMPLETELY before you add the caramel layer.
For the caramel layer
  1. To make your caramel, first melt the butter in the microwave, then combine the condensed milk, butter and sugar together in a saucepan over a very low heat. Stir constantly and increase the heat to medium-low - small bubbles will appear. Continue to stir constantly, reducing heat if bubbles become any more vigorous. Continue to stir and cook for 35-45 minutes, until it's turned from a light yellow to a deep tan gold colour. Remove from heat and transfer to a heat proof bowl, then let cool in the fridge or freezer. While it's still warm, add four tbsp of peanut butter and stir through. Once cool, pour it onto your shortbread layer.
For the chocolate
  1. Simply break your two bars of chocolate into chunks and pop into a microwave proof bowl. Heat on 30 second intervals until soft, not forgetting to remove and stir after every 30 seconds. Be careful - the bowl may get very hot! When it's almost melted, remove from the microwave as the residual heat will continue to melt the chocolate.
  2. Pour over the caramel layer, using a knife or the back of a spoon to smooth it into the corners. Put the tray into the fridge and let set overnight.
beta
calories
489
fat
31g
protein
6g
carbs
50g
more
Kerry Cooks https://kerrycooks.com/
Peanut Butter Millionaire Shortbread Bars - SO addictive!

I hope you love these!

 

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Filed Under: Baking, Chocolate Heaven, Peanut Butter Tagged With: chocolate caramel shortbread, Peanut butter, Peanut Butter Millionaire Shortbread Bars

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Reader Interactions

Comments

  1. Michelle says

    February 5, 2016 at 3:47 pm

    I wonder how a shot from baileys or bourbon would behave in the caramel? A tipsy millionaire shortbread

    Reply
    • Kerry Cooks says

      February 5, 2016 at 4:00 pm

      Give it a go! (and report back 🙂 )

      Reply
  2. Sammie says

    January 22, 2016 at 8:08 pm

    These look amazing. I have to make them. Nun said – oops except thank you so much for sharing this with the world. Sammie x

    Reply
  3. Jo of Jo's Kitchen says

    September 21, 2015 at 2:43 pm

    I want one now- do you deliver?
    Jo of Jo’s Kitchen recently posted…Farmhouse Fruit Cake #GBBOBloggers2015My Profile

    Reply
  4. Laura@howtocookgoodfood says

    September 21, 2015 at 1:26 pm

    This is total heaven, peanut butter is a brilliant idea and makes them even better than the classic millionaire shortbread!

    Reply
  5. Diane @ Life of Di. says

    September 21, 2015 at 12:32 pm

    Shortbread cookies are soo good! I bet the addition of peanut butter would taste awesome (because, well, peanut butter makes everything better.)
    Diane @ Life of Di. recently posted…September: Currently.My Profile

    Reply
  6. Rachel says

    September 21, 2015 at 12:23 pm

    *hides the internet from Mr Vagabond Baker*
    If he sees this I’ll never hear the last of it: “Make it.” “Have you made that stuff yet?” “Where’s the PB caramel shortbread” “I’m still waiting for that PB caramel millionaire thing” 😉
    Rachel recently posted…48 Hours and 3 Foodie Festivals in Warwickshire!My Profile

    Reply
    • Kerry Cooks says

      September 21, 2015 at 12:27 pm

      You had might as well give in now! Should I not tell you that I’m currently mulling over a crazy idea for a nutella / chocolate based caramel shortbread?!

      Reply
  7. Emily says

    September 21, 2015 at 11:27 am

    Yumm! These look dangerously good x
    Emily recently posted…vegetarian and gluten free lasagne.My Profile

    Reply
  8. Laura says

    September 21, 2015 at 8:44 am

    WANT! Enough said 🙂
    Laura recently posted…3 Ingredient Nutella Stuffed CookiesMy Profile

    Reply

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Hi, I'm Kerry!
Cookie-dough addict, rainbow cake lover, friend to cats, never met a pizza I didn't like. VERY enthusiastic human. Homebody and adventurer. Nice to meet you!

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