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Key Lime Pie Biscuits in a white tin, with white tulips in the background.

Key Lime Pie Sandwich Cookies

Key Lime Pie inspired sandwich biscuits have proved to be a huge success in our house! Featuring melt-in-the-mouth sweet shortbread biscuits, sandwiching buttercream and zingy lime curd, these Key Lime Pie Biscuits will fly off the table before you've had time to make tea!
5 from 4 votes
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Prep Time 30 minutes
Cook Time 12 minutes
Chilling and Cooling Time: 1 hour
Total Time 1 hour 42 minutes
Course Dessert
Cuisine American, British, European
Servings 40 biscuits
Calories 89 kcal

Equipment

Ingredients
 
 

For Lime Biscuits:

  • 170 g butter fridge-cold
  • 250 g plain flour
  • 100 g icing sugar
  • 2 limes zest of both + 1-2 tablespoon of juice
  • 1 egg yolk

Filling:

  • 80 g butter room temperature
  • 80 g icing sugar
  • 100 g lime curd

Instructions
 

  • Place the flour into a large mixing bowl. Cube the butter and, using your fingertips, rub it into the flour until the mixture resembles fine breadcrumbs.
  • Mix in icing sugar and lime zest.
  • Add an egg yolk and 1-2 tablespoon of lime juice, and bring everything into a ball, making sure not to overwork the pastry.
  • Divide into two equal pieces. Flatten them slightly (so it's easier to roll out later) and wrap in clingfilm. Pop in the fridge for 30 minutes.
  • Whilst the pastry is chilling, line two large baking sheets with baking parchment.
  • Preheat the oven to 160°C Fan. After 30 minutes of chilling, take the pastry out of the fridge onto a floured surface. Flour your rolling pin and roll both pieces out to 3 mm thickness.
  • Stamp out approx. 80 round discs, using a 5 cm cookie cutter. Then use a small cutter (or a piping nozzle) to stamp out the middles of half of the discs for the tops.
  • Bake in the oven for 12-13 minutes switching the shelves and rotating baking sheets midway through. Take them out of the oven and leave to cool down completely.
  • Beat the butter and icing sugar using an electric handheld mixer until very light and fluffy.
  • Pipe a circle of buttercream around the outer edge of the bottom discs, leaving the centre empty for the lime curd. Then place the top dics with the middles cut out on top and press gently to seal. Spoon a bit of lime curd in the middle of each biscuit.
  • Dust the Key Lime Pie Cookies with some icing sugar before serving.

Nutrition

Calories: 89kcalCarbohydrates: 10gProtein: 1gFat: 5gSaturated Fat: 3gPolyunsaturated Fat: 1gMonounsaturated Fat: 1gTrans Fat: 1gCholesterol: 21mgSodium: 41mgPotassium: 12mgFiber: 1gSugar: 5gVitamin A: 157IUVitamin C: 1mgCalcium: 4mgIron: 1mg
Keyword Biscuits With Lime Curd, Cookies with Lime Curd, Key Lime Cookies, Key Lime Pie Biscuits, Key Lime Pie Cookies, Key Lime Pie Sandwich Cookies, Lime Biscuits, Lime Cookies
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