Preaheat the oven to 350° F (180° C.) Prepare an 8x8 inch (20 cm) square baking pan with cooking spray or parchment paper.
Add the sugars and the salt to a large mixing bowl and stir with a large wooden spoon. Melt the butter and coconut oil, then add them to the sugar. Add the coconut and vanilla extracts, and the lime juice and zest, and mix well. Next, add the eggs and mix until they are fully incorporated.
Next, add the flour and stir in slowly. Before it is quite fully mixed in, add the white chocolate, macadamia nuts, and coconut flakes. Continue to stir until these are evenly distributed and the flour is fully incorporated as well. Be careful not to overmix.
Pour the batter into the prepared pan and bake for about 40 minutes, or until the blondies are medium brown on top. Store at room temperature for about 4 days.
