01 - Preheat oven to 350°F (175°C). Line an 8-inch square baking pan with parchment paper, leaving an overhang for easy removal.
02 - Combine 1 1/2 cups shredded coconut, 1 cup flour, 1/2 cup sugar, and 1/2 cup melted butter in a medium bowl. Mix thoroughly until evenly moistened. Press crust mixture firmly into the prepared pan, smoothing into an even layer.
03 - Bake crust in preheated oven for 15 minutes or until lightly golden at the edges. Remove from oven and set aside.
04 - In a large bowl, whisk together 4 eggs, 1 1/4 cups sugar, 1/4 cup flour, and 1/2 cup lime juice until completely smooth.
05 - Pour lime filling over the hot crust. Return pan to oven and bake for 25 minutes, or until the center is just set.
06 - Allow bars to cool completely in the pan on a wire rack. Sprinkle 1/4 cup toasted shredded coconut evenly over the top. Slice and serve.