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Key Lime Pie Coconut Cookie Sandwiches (Easy and Refreshing Dessert Recipe)

If you love tropical flavors, citrus desserts, or cookie sandwiches, this recipe is calling your name. With each bite you have a soft key lime and coconut cookie that is filled with a smooth cream cheese frosting that has hints of key lime all throughout. This dessert is refreshing, light, and perfect for summer gatherings.
Course: Dessert
Cuisine: American
Keyword: baking, Coconut, Cookie Lover, Cookie Sandwich, Desserts, key lime, Summer Dessert
Servings: 12 Cookie Sandwiches

Ingredients

Key Lime Cookies:

  • 8 tbsp unsalted butter, melted (113 g)
  • ½ cup light brown sugar (110 g)
  • 1/2 cup granulated white sugar (100g )
  • 1 egg room temperature
  • 1 tsp vanilla extract
  • 1 tsp lime juice
  • 1 tsp lime zest
  • 1 1/4 cup all purpose flour (155 g)
  • ¼ cup graham cracker crumbs
  • 1 tsp baking powder
  • ¼ tsp baking soda
  • ½ tsp salt
  • 1 cup white chocolate (140 g)
  • 2 tbsp shredded coconut

Key Lime Cream Cheese Frosting:

  • 4 oz cream cheese, softened (113 g)
  • 4 tbsp unsalted butter, softened (56 g)
  • 1 ¼ cups powdered sugar, (150 g)
  • 1 tsp lime zest
  • 2 tsp fresh lime juice, (adjust to taste)
  • ½ tsp vanilla extract
  • pinch of salt

Instructions

Key Lime Cookies:

  • In a large mixing bowl, whisk together the melted butter, brown sugar, and white sugar until smooth.
  • Add the egg, vanilla extract, lime juice, and lime zest, mixing until fully combined.
  • In a separate bowl, whisk together the flour, graham cracker crumbs, baking powder, baking soda, and salt. Gradually add the dry ingredients into the wet mixture, stirring just until a soft dough forms leaving behind a few streaks of flour.
  • Fold in the white chocolate chips and shredded coconut until combined.
  • Scoop the dough into 12 even sized cookie dough balls, place on a lined baking sheet and freeze for at least 30 minutes.
  • Once it's been almost 30 minutes, preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper and place 6 cookie dough balls per baking sheet.
  • Bake for 14–16 minutes until the edges are lightly golden and the centers look set but still soft.
  • Allow cookies to cool on the baking sheet for 5–10 minutes, then transfer to a wire rack to cool completely.

Key Lime Cream Cheese Frosting:

  • In a medium bowl, beat together the cream cheese and butter until smooth and creamy. Add the powdered sugar, mixing until fluffy.
  • Mix in the lime zest, lime juice (to taste), vanilla extract, and a pinch of salt. Beat until light and spreadable.
  • Once the cookies are completely cooled, transfer the frosting into a piping bag (or use a spoon). Pipe a generous swirl of frosting onto the flat side of one cookie (6 cookies in total), then gently press another cookie on top to form a sandwich.
  • For best texture, chill the assembled cookie sandwiches for 20–30 minutes before serving to help the frosting set.