Slow Cooker Irn Bru Chicken

Last updated on: August 21, 2025

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At first glance, it sounds like something your pal Gav made up at 3am after a night on the lash. But brace yersel’, because this is a legit dish—and it’s one of the most deliciously bonkers Scottish recipes you’ll ever make in a slow cooker.

You may have heard of Diet Coke Chicken but I've gone one better and used our nation's favourite soft drink instead. It's kinda like a sweet and sour chicken but a bit more interesting and served with an extra slab of banter.

If you've never had the pleasure of trying or even hearing about Irn Bru before, let me explain...

Irn Bru is a carbonated soft drink that has been a staple in Scotland for over a century. This bright orange beverage is often referred to as “Scotland’s other national drink” and has a unique, fruity flavour that sets it apart from other fizzy drinks.

The history of Irn Bru dates back to 1901, when it was first produced by  A.G. Barr. Over the years, the Scottish recipe for Irn Bru has been kept a closely guarded secret, and the drink has become a beloved icon in Scotland. In fact, Irn Bru is so popular in Scotland that it is often considered to be the country's unofficial national drink.

One of the key ingredients in Irn Bru is a secret blend of 32 flavours, including fruity, sweet, and spicy notes. This combination of flavours creates a taste that is both refreshing and invigorating, making it the perfect ingredient to add to a variety of dishes, including chicken.

In addition to its delicious flavour, Irn Bru is also known for its distinctive bright orange colour. This vibrant hue has become synonymous with the brand, and Irn Bru is now widely recognized as one of the most recognizable soft drinks in the world.

In recent years, Irn Bru has become increasingly popular outside of Scotland and is now enjoyed by people all around the world. From the UK to Australia, people are discovering the unique taste of Irn Bru and are falling in love with this fizzy favourite.

Don't get too caught up about the sugar in this recipe either, there is the equivalent of 1/5 of a can per serving, not really worth getting all upset about. If you do want to cut the calories, you can use a Diet Irn Bru but the sauce doesn't taste as good so go on, treat yourself to a can of the proper stuff.

What is Irn Bru Chicken?

Irn Bru chicken is a proudly Scottish recipe (not traditional in the slightest, just made up by me) where chicken is simmered in the nation’s favourite fizzy drink.

The Irn Bru adds a unique blend of sweetness, citrus, and mysterious “what-is-that-flavour?” energy to create a rich, sticky glaze. It’s like sweet and sour chicken with a Scottish passport (if such a thing existed).

Typically slow-cooked with tomato puree, smoked paprika, and Worcestershire sauce, it’s the kind of meal that makes people say “Wait, seriously?”—and then go back for seconds.

What Slow Cooker Do You Use?

I use a Morphy Richards 6.5L slow cooker but it doesn't seem to be stocked on Amazon anymore. I had a look and this slow cooker looks very similar to the one I use.

The main thing I would say when getting a slow cooker is get one that is at least 6L as it will mean you can cook most slow cooker recipes that you'll find. I haven't used one that sears the food for you. I find that a frying pan does that just fine 😉

Key Ingredients In Slow Cooker Irn Bru Chicken

Irn Bru. The key ingredient for this Scottish recipe. Full sugar (yes it's not the same as it was) version works best. Diet is ok but just lacks a bit of something. If you can't get Irn Bru use a Coke or something that's generically sweet, fruity and has a flavour that you can't quite describe....

Smoked Paprika. A delicious seasoning that's one of my favourite spices to use in recipes. If you only have normal or sweet paprika that's ok, but smoked is better.

Worcestershire Sauce. This is a great ingredient for adding a bit of punch to any recipe. There isn't really a substitute for it.

Chicken Breast. This recipe works best with chicken breast but can also be done with pork fillet. If you do use pork, you'll just need to cook for longer.

Cornflour. Often a key ingredient when cooking in the slow cooker to help thicken the recipe so you don't end up with a soup.

Slow Cooker Irn Bru Chicken

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Whisky sauce, haggis, porridge, neeps and tatties and a deep-fried Mars Bar are some 'traditional' Scottish delights you will certainly have come across. However, you've probably never seen a recipe that features our favourite drink - Irn Bru - until now......

• Total Time: 5 hours, 10 minutes
• Yield: 5 1x

Ingredients

Units MUS Scale 1x2x3x

• 1 kg chicken breast, chopped
• 1 onion, finely chopped
• 1 garlic clove, finely chopped
• 20 ml Worcestershire Sauce
• 20 g tomato puree
• 30 g cornflour (corn starch for US)
• 1 tsp. smoked paprika
• 330 ml Irn Bru or Coke (needs to be the full sugar kind)
• 1/2 tsp. salt
• Good few grinds of black pepper

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Instructions

Add all of the ingredients to the slow cooker. Mix through. Cover and cook for 4 to 5 hours on low.

• Author: Scott Baptie
• Prep Time: 10 mins
• Cook Time: 5 hours
• Category: Poultry
• Method: Slow Cooker
• Cuisine: Scottish

Nutrition

• Serving Size: 1
• Calories: 279
• Fat: 3g
• Carbohydrates: 15g
• Protein: 47g

Recipe Video

Storage Tips

To Store

Let the Irn Bru chicken cool down first (nobody wants steamed Tupperware). Pop it in an airtight container and stash it in the fridge for up to 3 days. The sauce will thicken and get even better overnight. It’s like revenge. But tastier.

To Reheat

Microwave it until hot, or warm it gently on the hob if you're feeling chef-y. Add a splash of water or stock to loosen up the sauce if it’s gone a bit clingy.

To Freeze

Yes, you absolutely can freeze this. Let it cool completely, portion it out, and freeze for up to 3 months. Defrost in the fridge overnight before reheating like a responsible adult.

FAQs

What does Irn Bru chicken taste like?

It's sweet, tangy, and surprisingly balanced. Imagine sweet and sour chicken took a trip to Glasgow and came back funnier and better dressed.

Can I use Diet Irn Bru instead?

You can, but the flavour just isn’t quite as good. The sugar in the full-fat stuff caramelises beautifully in the slow cooker, giving it that sticky glaze.

Is Irn Bru chicken actually healthy?

It’s high in protein and low in fat, so yes! While the Irn Bru adds sugar, there’s not loads per portion. It’s better than takeaway, that’s for sure.

What should I serve it with?

Rice is a solid shout—it soaks up the sauce beautifully. But chips, mashed tatties, but to make it a proper Scottish recipe then consider the classics like neeps and tatties all work a treat.

Can I make Irn Bru chicken without a slow cooker?

Absolutely. Simmer it on the stove, adding a bit more liquid, or chuck it in the oven in a covered dish at 160°C for a couple of hours. Go with chicken thighs for best results in the oven.

If You Liked This Irn Bru Chicken, Try These:

Scottish Lentil Soup Recipe. The OG of Scottish comfort food. This hearty lentil soup is warm, filling, and tastes like a hug from your gran (without the overwhelming smell of lavender). Packed with protein and fibre, it’s a proper winter warmer and a great way to get more veggies in without feeling like you’re eating rabbit food.

Diet Coke Chicken. If Irn Bru chicken is the cheeky cousin from Glasgow, this one’s the clean-cut, macro-friendly sibling. Still sticky, still saucy, but made with Diet Coke so you can feel smug while smashing your protein goal. Great for meal prep and surprisingly moreish.

Sweet Chilli Salmon. For when you're feeling a bit fancy (but still can’t be bothered with anything too complicated). This salmon dish is zingy, sticky, and ready in no time. High in protein, omega-3s, and general tastiness. Goes beautifully with rice, noodles, or a smug Instagram post.