Double Chocolate Peppermint Bark Cookies
The richest double chocolate peppermint bark cookies with crisp edges, fudgy centres and plenty of mint flavour. Forget shop bought, homemade is so much better!

These double chocolate peppermint bark cookies are the ultimate festive bake! When I heard Marks & Spencer weren’t bringing back their peppermint bark cookies, I decided that I’d need to make them myself. And give them a few upgrades at the same time.
The base dough for these cookies is made with bloomed Dutch processed cocoa powder for the richest chocolate flavour possible, plus a splash of peppermint extract for an extra hit of mint. For the mix ins, we’re using chocolate chunks (milk, white or dark all work so whichever you prefer!), minty After Eight chocolates and plenty of homemade peppermint bark. There’s a chunk of peppermint bark pressed on top of each cookie when they come out of the oven, which go ever so slightly melty and give these cookies a fantastic festive finish.
Obviously these double chocolate cookies are all about the peppermint flavour but they have the perfect texture too! The edges are crisp and crinkly but the insides are fudgy and rich with just the right amount of chewiness. The pool of molten chocolate and chunk of peppermint bark on top of each cookie add another layer of decadence.
For more cookie flavours, check out our ever growing collection of cookie recipes! There’s a whole load of flavours here, from banana bread, to brown butter oreo & black sesame cheesecake. And for more festive bakes, take a look at our Christmas baking recipes.
Ingredients For Peppermint Bark Cookies
- Peppermint Bark – I’d highly recommend making my homemade peppermint bark for these cookies but shop bought will work too if you’d prefer. If you do make my recipe, you’ll need roughly half a batch.
- Chocolate – You can use white, milk or dark chocolate for these cookies or a mix. There’s chopped chocolate in the cookie dough and a chocolate chunk pressed on top of each cookie. I’d recommend using chopped bars of chocolate as they melt better.
- After Eights – For extra mint flavour, I add chopped After Eight mint chocolates into the cookie dough. Feel free to replace these for extra chopped chocolate though if you’d prefer.
- Cocoa Powder – Make sure to use Dutch processed cocoa powder for this cookie recipe, you can get this in most supermarkets. You get a richer chocolate flavour with this style of cocoa powder and as it’s unsweetened, it won’t add extra sugar to the dough.
- Butter – I use unsalted butter for most of my baking recipes, as it allows us control over how much salt is added.
- Sugar – You’ll need 3 different sugars for this recipe. Dark brown sugar for a rich flavour and fudgy texture. Caster sugar for sweetness and crisp edges. And golden syrup for a chewy texture.
- Eggs – You’ll need a large egg and 2 additional yolks for these cookies. The large egg should weigh around 50 grams out of the shell. The extra yolks are used for extra fudginess.
- Flavourings – I flavour my peppermint bark cookies with extra peppermint extract and vanilla extract too.
- Flour – You’ll need plain flour (all purpose) for the cookie dough, as we’ll be adding in raising agents ourself.
- Cornflour (Cornstarch) – Adding a small amount of cornflour to cookie dough, gives the cookies a chewy texture.
- Raising Agents – For the best texture and spread in the oven, we’re using a mix of baking powder and bicarbonate of soda.
- Salt – There’s fine table salt in the cookie dough and a sprinkle of sea salt on top of each cookie once they’re baked.


How To Make Double Chocolate Peppermint Bark Cookies
I’ve taken my classic cookie dough, flavoured it with cocoa powder and a splash of peppermint extract then jam packed it full of chocolate chunks, After Eight mint chocolates and homemade peppermint bark.
The key with this one is to bloom the cocoa for extra flavour and to chill the cookie dough overnight before baking, so they don’t spread out too much in the oven.
1. Bloom Cocoa Powder In Butter
The first step is to whisk hot melted butter into cocoa powder, to form a paste then let it cool to room temperature. This technique is called blooming cocoa and is used to enhance the chocolate flavour but it also helps the cocoa mix into the cookie dough more evenly.

2. Cocoa Cookie Dough
To make this cocoa cookie dough, add the bloomed cocoa into the bowl of a stand mixer along with softened butter, dark brown and caster sugar, golden syrup, vanilla and peppermint extract then mix with the paddle attachment until combined and smooth. Be careful not to over mix at this point though!
Next, gradually mix in an egg plus 2 additional yolks then gently mix in plain flour, cornflour, baking powder, bicarbonate of soda and table salt, until just incorporated. To ensure that the raising agents are evenly distributed, I like to sieve the dry ingredients into a separate bowl first then whisk to combine.
3. Mix Ins
There’s 3 different mix ins that go into these cookies. Chocolate chunks (cut from a bar), roughly chopped After Eight mint chocolates and peppermint bark that’s been broken into small pieces.
Once your cookie dough has been mixed, add in the mix ins then use a spatula to fold them in by hand.




4. Chill To Firm Up Cookie Dough
Once your cookie dough has been mixed, you’ll need to chill it in the fridge for 30 minutes – 1 hour, just until it’s firmed up enough to scoop and shape.
5. Scooping And Rolling
Before scooping and rolling the cookie dough, you’ll need to cut 13 chocolate chunks which will be pressed on top. You’ll also need 13 pieces of peppermint bark (shown above) but these will be placed onto the cookies when they come out of the oven.
Once chilled, use a cookie scoop or a spoon to divide the cookie dough into 13 equally sized portions. Each should weigh around 85 grams. Make sure to get plenty of chocolate in each ball of cookie dough. Then use your hands to roll each portion into a ball, before pressing a chocolate chunk on top.
6. Overnight Chill
At this point, the cookies need to chill in the fridge overnight before you bake them, otherwise they will spread out too much as they bake. If you’re short on time, at least 4 hours is fine but generally, I like to make the cookie dough, chill overnight then bake the following morning.

7. Baking
These chocolate cookies bake for 13 minutes at 175°c/347°f, until the edges are crisp but the middles are still soft. I use the Pan Banging technique for my cookies, which I’ll explain more on below. As soon as your cookies come out of the oven, press a piece of peppermint bark on the top whilst they’re still warm then sprinkle lightly with sea salt. Let the cookies cool completely on their trays then serve! I think that these cookies look best if you place the bark slightly to the side of the molten pool of chocolate that’s on top…
How To Get Peppermint Bark To Stick To Cookies
There’s a really easy way to get chunks of peppermint bark to stick to the top of your cookies. You simply press the chocolate bark on top of each cookie whilst they’re hot out of the oven. This way, the chocolate bark will melt very slightly, just enough to stick to the cookie. The process of finishing the cookies involves scooting each cookie into a perfect round shape then pressing a piece of peppermint bark on top and sprinkling with sea salt.


The Pan Banging Technique For Baking Cookies
I’m a huge fan of the pan banging technique for baking cookies, as it gives them crispier edges, molten pools of chocolate & a fantastic crinkled texture. This technique is perfect for cookies with lots of mix ins like these ones, as it helps them spread out more as they bake.
This technique was developed by Sarah Kieffer from The Vanilla Bean Blog and involves banging the tray of cookies onto your oven rack towards the end of the cooking process. It’s super easy to do & I use it for most of my cookie recipes!
Here’s how to bake peppermint bark chocolate chip cookies cookies using the pan banging technique.
- Bake the cookies at 175°c/347°f for 9 minutes (undisturbed).
- Next, open your oven door, lift up the baking tray inside the oven by a few inches then let it drop down against the oven rack. Use enough force so that the cookie starts to deflate.
- Bake for another 2 minutes then repeat the pan banging process.
- Bake for another 2 minutes (bringing the total bake time to 13 minutes) then take the cookies out of the oven.
- Give the tray a firm tap on the counter as you take it out of the oven then leave to cool.
The Cookie Scoot
The cookie scoot is a technique used to shape cookies into a perfect circle as soon as they come out of the oven. To do this, take a large circular cutter & use it to move (or scoot) the edges of the cookies, to make a perfect circle. This is the secret to making a batch of uniform cookies.
As these chocolate chip cookies are packed full of mix ins, they don’t tend to bake perfectly round, so I’d highly advise using the cookie scoot to make them a bit neater. The cookie cutter that I use to scoot my cookies is 5 inches wide, which is the ideal size for most cookies.

Peppermint Bark Cookies Tips and Tricks
- Bloom the cocoa powder in melted butter then cool before using. This intensifies the chocolate flavour!
- Use Dutch processed cocoa powder instead of sweetened cocoa, for a richer flavour. As Dutch processed cocoa isn’t acidic, it won’t react with the bicarb in the dough.
- Use roughly chopped chocolate bars instead of chocolate chips as they melt better and lets you control the size of the chocolate chunks.
- Chill your cookie dough overnight before baking, so they don’t spread out too much in the oven.
- Use a large round cookie cutter to “scoot” the baked cookies into perfect circles as soon as they come out of the oven.
- Press a chunk of peppermint bark on top of each cookie as soon as they come out of the oven, so it sticks to the top.
- Top each cookie with a sprinkle of sea salt. This brings out the flavours from the chocolate.
Frequently Asked Questions
To bake peppermint bark cookies in an Aga, cook them on a grid shelf placed on the floor of the baking oven.
Homemade peppermint bark cookies should be stored in an airtight container and will keep for up to 3 days.
Blooming cocoa powder is where you mix cocoa with a warm liquid (melted butter in this recipe), to intensify the chocolate flavour. I wouldn’t recommend skipping this step in this cookie recipe, as it helps the cocoa mix smoothly into the cookie dough too.
It’s best to use chopped bars of chocolate as well as the peppermint bark, to get molten pools of chocolate in each cookie. Chopped After Eights add extra mint flavour to the cookie dough but can be substituted for regular chocolate. If you wanted to use chocolate chips, I’d recommend good quality callets.
More Cookie Recipes To Try
- Caramelised Cornflake Chocolate Chip Cookies
- Thin Brown Butter Chocolate Chip Cookies
- Brown Butter & Vanilla Glazed Cookies
- Kettle Chip Chocolate Chip Cookies
- Brown Butter Oreo Chocolate Chip Cookies
- Cranberry, Fudge & White Chocolate Cookies
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Double Chocolate Peppermint Bark Cookies
Equipment
- Stand Mixer
- Mixing Bowl
- Large Round Cookie Cutter
- Baking Trays
Ingredients
Double Chocolate Cookies
- 200 g Unsalted Butter
- 40 g Dutch Processed Cocoa Powder (See Notes)
- 130 g Dark Brown Sugar
- 100 g Caster Sugar
- 50 g Golden Syrup
- 1 tsp Vanilla Extract
- ¼ tsp Peppermint Extract
- 1 Large Egg
- 2 Egg Yolks
- 250 g Plain Flour
- 15 g Cornflour (Cornstarch)
- ¾ tsp Baking Powder
- ¾ tsp Bicarbonate Of Soda
- ½ tsp Baking Powder
- 100 g Peppermint Bark (See Notes)
- 100 g White Chocolate
- 80 g After Eight Chocolates
For On Top
- 90 g Chocolate (Dark, Milk, White Or A Mix)
- 220 g Peppermint Bark
- Sea Salt
Instructions
Double Chocolate Cookies
- Chop the butter into small pieces. Add 80 grams of the butter into a heatproof jug then microwave until just melted. Set the remaining 120 grams of butter to one side, to soften.
- Add the cocoa powder and melted butter into a bowl, whisk to combine then leave to cool to room temperature.This blooms the cocoa, adding extra flavour to the cookie dough! The mix should take around 15 minutes to cool.
- Next, add the softened butter, bloomed cocoa, both sugars, golden syrup, vanilla and peppermint extract into the bowl of a stand mixer. Using the paddle attachment, mix on a medium-low speed until just combined. This will only take 2-3 minutes. Make sure to scrape the bowl down as you mix, so that there's not streaks of butter.The mix may look a bit grainy at this point. Don't worry, it'll come together when you mix in the eggs and flour.
- Add the egg and yolks into a jug, lightly beat with a fork then slowly pour into the butter, with the mixer running on medium speed. Stop mixing once the eggs are just incorporated.
- Sift the flour, cornflour, baking powder and bicarbonate of soda into a separate mixing bowl, add in the salt then whisk to combine.
- Add the dry ingredients into the cookie dough then mix on a low speed until just combined. A few dry streaks is fine at this point.
- Next, roughly chop the chocolate and After Eights and break the peppermint bark into small pieces. Add the mix ins into the cookie dough then fold in with a spatula.
- Chill the cookie dough in the fridge for 30 minutes – 1 hour, to let it firm up slightly. In the meantime, chop the chocolate (for on top) into 13 equally sized chunks.You won't need the extra peppermint bark until you bake the cookies.
Rolling & Topping
- Once the cookie dough has firmed up slightly, use a cookie scoop (or a spoon), to portion it into 13 equally sized portions. Each should weigh around 85 grams.
- With your hands, roll a portion of cookie dough into a ball then press a chocolate chunk into the top. Repeat with the remaining dough, placing them onto a lined baking tray as you roll.
- Cover the tray with clingfilm then chill the cookie dough in the fridge overnight.
Baking
- The next day, preheat an oven to 175°c/155°c fan (347°f/311°f).
- Whilst your oven is heating up, break the peppermint bark into 13 chunks then place back in the fridge.
- Place 3-4 balls of cookie dough onto a lined baking tray, making sure that there’s plenty of room between them.
- Bake the cookies for 9 minutes then open your oven door, lift up the baking tray inside the oven by a few inches then let it drop down against the oven rack. Use enough force so that the cookie starts to deflate. (This is the “Pan Banging” method.)
- Bake for a further 2 minutes then repeat the pan banging process.
- Bake for another 2 minutes (bringing the total bake time to 13 minutes) then remove from the oven.Once baked, the cookies will be crisp on the edges but still soft in the middle.
- As soon as the cookies come out of the oven, use a large, round cookie cutter, to gently scoot each cookie into a perfect round shape. Gently press a piece of peppermint bark on top of each cookie then lightly sprinkle with sea salt. Let the cookies cool completely on the tray.
- Repeat the cooking process with the remaining cookies, baking 3-4 cookies at a time.
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