Add the flour mixture. Mix in just until combined.
Pour in the coconut milk and mix until just combined. Do not overmix.
¾ cup canned coconut milk
Spoon batter evenly into the prepared cake pans.
Bake for about 20-25 minutes, or until a toothpick inserted in the center comes out clean.
Remove cakes from the oven and let cool in the pans completely.
Once cakes are cool, make the frosting.
Add egg whites, sugar, corn syrup, water, salt, and cream of tartar to the top of a double boiler.
3 large egg whites, 1 cup + 2 tablespoons granulated sugar, ½ cup light corn syrup, 3 tablespoons lukewarm water, ¼ teaspoon salt, ½ teaspoon cream of tartar
Place top pot over rapidly boiling water.
Beat the egg mixture with a hand mixer on low for 30 seconds.
Increase the speed to medium-high, and continue mixing until the egg mixture stands in peaks.
Remove from heat. Mix in coconut extract.
½ teaspoon coconut extract
Use immediately to frost the cake. Place one of the cakes on your preferred cake plate.
Dollop frosting in the center and smooth into an even layer.
Top with the second cake. Finish frosting the outside of the cake, then decorate with shredded coconut.
2 cups sweetened shredded coconut
Notes
Butter: If using salted butter, decrease the salt to 1/4 teaspoon.
Oil: Neutral oils like light olive oil or canola oil work well.
Shredded coconut: Use sweetened for sweeter cake or unsweetened for less sweet cake.