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–+ servings

Key Lime Cookies

5 from 7 votes
Soft and chewy brown butter key lime cookies filled with melty white chocolate.
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Prep Time40 minutes
Cook Time12 minutes
Total Time50 minutes
Servings8 cookies
Calories349 kcal

Ingredients 

  • 113 g unsalted butter (½ c.)
  • 50 g granulated sugar (¼ c.)
  • zest of 3 key limes*
  • 110 g light brown sugar (½ c.)
  • 1 egg
  • ½ tsp. vanilla
  • 150 g all purpose flour (1 ¼ c.)
  • ¾ tsp. baking soda
  • ½ tsp. salt
  • 140 g white chocolate (¾ c. + 1 tbsp.)

Instructions 

  • In a small saucepan set over medium heat, brown the butter. Stir the butter occasionally until it turns amber in color and develops little brown specks.
  • Transfer the brown butter to a small heat-safe bowl. You should be left with at least 90g of brown butter (but not more than 95g). If you have a little less than 90g, just add in some water until you reach it.
  • Place the brown butter in the freezer for 5 minutes to cool down.
  • In the meantime, chop your white chocolate and pour the granulated sugar into a medium-sized mixing bowl
  • Zest the limes into the bowl of sugar, then use your hands to rub together the zest and sugar until sugar is fully coated and kind of resembles wet sand.
  • Add in the brown sugar and the brown butter once it has slightly cooled, then mix together until combined.
  • Whisk in the egg and vanilla until well combined.
  • Add in the flour, baking soda and salt. Use a rubber spatula to fold the mixture together just until a few flour streaks remain.
  • Add in the white chocolate and fold just until no flour streaks remain.
  • Cover the dough and chill it for at least 15 minutes. Annoying, I know - but so worth it and necessary to ensuring your dough doesn't spread too much!
  • Preheat the oven to 350°F / 175°C. Line a cookie sheet with parchment paper or a silicone baking mat.
  • Scoop out heaping 3 tbsp. scoops of dough (or use a 1/4 measuring cup), setting them on the cookie sheet at least 2" apart to allow room for spreading.
  • Top each cookie with additional white chocolate and a little bit more lime zest if desired, and bake for 12-14 minutes, or until the edges of the cookies are golden brown.
  • Immediately after taking the cookies out of the oven, you can take a bowl that is slightly larger than the cookies and swirl it around over the cookies to make them a little more uniform and circular.
  • Serve and enjoy!

Notes

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*you can use 1 large lime instead if you'd like!

Nutrition

Serving: 1cookieCalories: 349kcalCarbohydrates: 44gProtein: 4gFat: 18gSaturated Fat: 11gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gTrans Fat: 0.5gCholesterol: 55mgSodium: 275mgPotassium: 100mgFiber: 1gSugar: 30gVitamin A: 388IUVitamin C: 0.1mgCalcium: 56mgIron: 1mg