01 -
Coat three 9-inch round cake pans with nonstick flour spray. Line bottoms with parchment paper and spray again for easy release.
02 -
Combine chopped semisweet chocolate and boiling water in a heatproof bowl. Let stand one minute then stir until smooth and glossy.
03 -
In a clean bowl, beat egg whites on high speed until stiff peaks form. Set aside. Clean beaters thoroughly before next step.
04 -
Sift all-purpose flour, cocoa powder, baking soda, and salt into a separate bowl. Whisk to blend evenly.
05 -
Beat softened butter and granulated sugar on medium-high speed until pale and fluffy, about 3 minutes.
06 -
Add egg yolks one at a time, mixing thoroughly after each addition. Mix in melted chocolate and vanilla extract.
07 -
On low speed, add flour mixture in three additions, alternating with buttermilk. Begin and end with flour. Mix just until combined.
08 -
Gently fold one third of whipped egg whites into the batter to lighten. Then fold in remaining egg whites just until there are no streaks.
09 -
Divide batter evenly between pans. Smooth surfaces and bake at 350°F for 25–30 minutes, or until a toothpick comes out clean. Cool cakes in pans on a rack, then invert and remove parchment.
10 -
In a saucepan, whisk egg yolks, evaporated milk, and brown sugar. Add butter. Cook over medium-low, whisking constantly until thickened, about 12 minutes. Off heat, add vanilla, salt, coconut, and pecans. Cool to room temperature for spreading consistency.
11 -
Combine heavy cream and corn syrup in a microwave-safe bowl. Heat until boiling, then add chopped chocolate. Allow to stand 30 seconds, then whisk until completely smooth. Cool until mixture thickens slightly.
12 -
Place one cake layer on a platter. Spread a third to half of coconut pecan frosting over the layer. Stack next layer, add more frosting. Top with final layer and remaining frosting. Leave sides unfrosted.
13 -
Drizzle chocolate glaze generously over the top, letting it run down sides. Slice with a serrated knife and serve as desired.