01 -
Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving some overhang on the sides to easily lift the bars out later.
02 -
In a large bowl, cream together the softened butter and brown sugar until light and fluffy, about 2-3 minutes. Add the egg, vanilla extract, and coconut extract, then mix until well combined and smooth.
03 -
Gently fold in the flour, baking powder, salt, and shredded coconut just until the dry ingredients are incorporated - don't overmix. Fold in the white chocolate chips, distributing them evenly throughout the batter.
04 -
Spread the batter evenly into your prepared baking pan, smoothing the top with a spatula. Bake in the preheated oven for 15-16 minutes, or until the edges are lightly golden and the center is just set.
05 -
Remove the pan from the oven and let the coconut bars cool completely in the pan. This is important to ensure the frosting doesn't melt when applied.
06 -
In a large bowl, beat the room temperature butter until smooth and creamy. Add the powdered sugar, heavy cream or milk, lime juice, and lime extract. Beat until light and fluffy, about 2-3 minutes.
07 -
Add a few drops of lime green food coloring to achieve that signature Starbucks lime color. If you don't have lime green, mix a little yellow and green food coloring until you reach the desired shade. Start with just a tiny amount and add more as needed.
08 -
Spread the lime frosting evenly over the completely cooled coconut bars. Melt the white chocolate in short intervals in the microwave, stirring between each, until smooth. Drizzle the melted white chocolate over the frosted bars using a piping bag, ziplock with the corner snipped off, or a spoon. Sprinkle additional shredded coconut on top.
09 -
For clean cuts, refrigerate the bars for about 30 minutes to set the frosting. Using the parchment paper overhang, lift the bars from the pan and place on a cutting board. Cut into 16 squares. Enjoy at room temperature or chilled with a glass of milk or your favorite coffee!