01 -
Preheat oven to 175°C. Line an 20x20 cm or similar-sized baking dish with parchment paper, allowing edges to overhang.
02 -
In a large mixing bowl, combine crushed graham crackers, all-purpose flour, white sugar, and melted butter. Mix thoroughly until an even, slightly crumbly dough forms. Press mixture firmly into the base of the prepared pan. Bake for 15 minutes until lightly golden.
03 -
While the crust bakes, whisk sweetened condensed milk, coconut milk, sour cream, lime juice, and lime zest in a clean bowl until silky and well-blended. Incorporate coconut extract and food coloring if desired.
04 -
Pour filling evenly over the baked crust. Return to the oven and bake for an additional 15 minutes until just set but not browned.
05 -
Remove pan from oven. While warm, evenly sprinkle shredded coconut over the surface. Cool to room temperature, then chill in the refrigerator for at least 2 hours to allow filling to set.
06 -
Lift the bars out using parchment overhang. Slice into squares using a sharp knife and serve cold.