Key Lime Sugar Cookies

These soft and chewy lime cookies are both crunchy and soft and the perfect break from all the current lemon content while still celebrating citrus season!

Key Lime Sugar Cookies

Say hello to your new favourite cookies! Look, I do love a good chocolate chip cookie, but the weather is getting warmer and brighter, days are getting longer and my body is asking for more refreshing bakes. I did these cookies in a bit of a crazy “let’s try something different” moment, but as it turns out, they are really, really good! They are zesty but sweet, crunchy but also soft and chewy, they genuinely have an amazing balance.

What are Key Lime Sugar Cookies?

I know lime cookies is probably not the first thing that comes to mind, but honestly, THEY ARE GOOD. I truly think these lime cookies are the perfect spring/summer bake, they are with a super soft and chewy sugar cookie base and filled with a lot of lime zest and juice. And when I say filled I’m not exaggerating, they have the zest of 3 whole limes and the juice of 1 and 1/2 limes. They also require very little ingredients and 0 chill time, so you can be eating these in 30 minutes, which you know, it’s always a plus when you’re dying for cookies (which I always am tbh…).

So, what are these made of?

As I said, these cookies require very little ingredients. When I was making them I actually had a moment in which I thought I was missing stuff, that’s how quick they are. Here’s what you’ll need:

  • Limes (obviously) – I call these cookies key lime cookies, but the truth is that I used regular limes, as I cannot find key limes in the UK.
  • Granulated sugar – infused with lime zest, just perfection.
  • Egg
  • Butter
  • Flour
  • Baking powder
  • Soda powder

About infusing the sugar

Infusing sugar is super easy, all you have to do is add the lime zest to the sugar and rub them together with your finger tips for a couple for minutes. That way, the lime zest will release natural citrus oils infusing the sugar, the sugar will feel kind of wet and cumply from the oils. This is a much better option than simply adding the lime zest to your mix, as the flavour of the lime will really get into the cookies.

A few tips for success

  • Underbake the cookies! – underbaking them will make them chewy and soft in the middle and they will stay like that. Cook them until they go slightly golden on the edges and the centre is still soft. They will keep cooking in the tray.
  • Let them cool down completely before storing – if you put warm cookies in a container they’ll create condensation which will then make them wet. Nobody likes a soggy cookie!
  • Roll them in sugar – this will give them a really crunchy texture creating the perfect balance between a soft centre and a crunchy outside.

Key Lime Sugar Cookies


  • 115 gr of butter at room temperature
  • 250 gr of granulated sugar
  • 1 egg
  • 4 tsp of lime juice
  • The zest of 3 limes
  • 1/2 tsp of baking powder
  • 1/4 tsp of baking soda
  • 200 gr of flour


  1. Preheat the oven at 180 degrees celsius.
  2. Infuse the sugar by mixing it with the lime zest and rubbing them together with your finger tips for a couple for minutes. Set 50 gr aside in a small bowl.
  3. In a bowl, beat together the sugar and room temperature butter until light and fluffy. Then, add the egg and lime juice and mix again.
  4. Fold in the flour, baking powder and soda until incorporated.
  5. Using a cookie scoop, scoop the cookies into your hand and roll them into balls. Roll each cookie in the reserved lime sugar and place them on a lined baking tray.
  6. Cook in the oven for 10-12 minutes until the edges start going lightly golden, these cookies are chewy and fudgy so don’t let them in the oven for too long or they’ll be dry!

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