I made these cupcakes with my mum in mind as Key Lime Pie is her absolute favourite desert and I thought they were the perfect cake to accompanying your summer BBQ's, garden parties or lazy days sunbathing. A light sponge with a beautifully refreshing lime infused buttercream make these the perfect summer's day treat.

makes 12

175g caster sugar
175g unsalted butter

175g self-raising flour
3 large eggs
1/2 tbsp. baking powder
1 full lime zest
1 full lime juice


200g unsalted butter
450g icing sugar
1 full lime juice 


  1. Pre-heat oven to 180C and line a 12 hole muffin tray with cupcake cases.
  2. Add the sugar, butter, self-raising flour and eggs into a large mixing bowl and beat until combined. 
  3. Add the baking powder, lime zest and lime juice to the mixture; mix on a medium speed for 2-3 minutes. 
  4. Pour the mixture into the cupcake cases, around 1 tablespoon per case.
  5. Place in the oven and cook for 18-20 minutes or until golden and springy to touch.
  6. Once baked place the cupcakes on a wire cooling rack. Whilst cooling make the buttercream frosting.
  7. Beat the butter on a high speed until it is lightly coloured and a creamy consistency.
  8. Add half the icing sugar and, starting on a low speed gradually increasing to a high speed, beat until combined.
  9. Add the rest of the icing sugar and as above beat until combined. Pour in the lime juice and mix on a high speed for 1-2 minutes.
  10. Transfer the buttercream to a large icing bag with your chosen nozzle; I have gone for the star nozzle here. Alternatively the buttercream can be spread straight onto each cupcake if you don't have an icing bag to hand.
  11. Once the cupcakes have cooled completely, pipe the icing onto each cupcake. Sprinkle with lime zest to decorate and serve!
Whoever said simple was boring clearly hasn't tasted one of these cupcakes. A really easy recipe with delicious results! If you go ahead and bake these, which I really hope you do, please share your photos with me on Instagram and Twitter.


  1. omg these look so perfect that I want to eat them ALL

  2. They look delicious! Wanna try them! I like your blog and I'll be happy if we start to follow each other! :)

  3. Those cupcakes look amazing.

  4. Oh god these cupcakes look soo good! I will definitely try out the recipe, so yummy!

    Fabienne x

  5. Ooh I absolutely love Key lime pie and these cupcakes are so blimmin pretty. Gorgeous post!


  6. These look so beautiful and seriously yummy! I love simple recipes that don't require a million ingredients to make haha, these look perfect, will save this and give it a go xx

  7. That looks so yummy and too pretty to not eat it! I'm going to be honest but I don't eat any type of candy (I simply don't like it) but these, these look amazing, I will save this recipe to give it a go! Thank you for sharing! :)

    Have a lovely day!
    XO, Melissa

  8. Key lime pie is my favourite so I 100% need to make these!

  9. These look absolutely amazing!!!


  10. I love anything with lime and these look so delicious! I never bother with the effort of making a special icing and using a piping bag when making cupcakes but it makes them look so much more impressive when you do.

    Jessica -

  11. These looks INCREDIBLE and super simple! I bladdy love Key Lime! Immy x

  12. These look so tasty! And they're adorable. I need to try a key lime recipe!

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