Irn Bru Cupcakes

Adapted from Cola Cupcakes by the hummingbird bakery Cake Days

80g unsalted butter, softened
280g golden caster sugar
240g plain flour
1 tbsp baking powder
¼ tsp salt
100ml + 5 tbsp* Irn Bru
140ml full fat milk
2 large eggs

*I started with 100ml and added more to up the taste, but I think you really do need the syrup for this if you know a pub owner who has Irn Bru on tap you’re in luck!! You’ll only need a tbsp of syrup and 240ml of milk then follow the recipe as stated below.

Pre-heat oven at 190*C and line your muffin tin
I softened the butter in the microwave so some of it was liquid, then I mixed it with the caster sugar, plain flour, baking powder, and salt until it looked like sand.
In a jug I beat the Irn Bru, milk and eggs together.
I then poured about 1/3 of the wet mixture into the dry and beat on low then medium to make a smooth mixture.
Then I poured the rest in and mixed until smooth.
I then baked for 18-20 minutes I rotate half way through because my oven is uneven.
Then I cheated and used pre-made Betty Crocker vanilla icing.

golden tops

the tops were so good I almost didn't put icing on them!
The big question do they taste like Irn Bru. No. See * note above. Although they did not taste of my husband’s favorite soft drink, they did turn out good. They have a nice golden top (see pictures) that’s sort of caramelized and very yummy.
It’s the first time I sort of adapted my own recipe from someone else’s. I originally got the idea from this blog. I might try her recipe some day to see if it tastes more like Irn Bru.
Has anyone else tried baking with soft drinks and if so…What did you try? Did it work out? What would you do differently if anything?
My husband's co-workers loved these!! ;0)


  1. As I am Scottish and my granny and grandad lived in the town where Irn Bru was made, I therefore have it running through my veins.


    I am going to try this today.

  2. My husband is Scottish too and loves Irn Bru, but just to make sure you know the cupcakes didn't taste much like Irn Bru! The batter did! If you get them to taste more like Irn Bru please let me know how you do it!! ;0]


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