01 -
Preheat oven to 350°F with rack in middle position. Spray two 9-inch round cake pans with nonstick cooking spray, line with parchment circles, and spray again.
02 -
Place chopped chocolate in heatproof bowl. Bring water to boil and pour over chocolate. Let rest 1 minute, then stir until smooth and completely melted.
03 -
Using electric mixer, beat egg whites on high speed until stiff peaks form, 1-2 minutes. Set aside and clean beaters.
04 -
In medium bowl, whisk together flour, cocoa powder, baking soda, and salt until evenly distributed.
05 -
In large bowl, beat softened butter and granulated sugar on medium-high speed until light and fluffy, about 3 minutes.
06 -
Beat in egg yolks one at a time, mixing well after each addition. Blend in melted chocolate and vanilla extract until smooth.
07 -
On low speed, alternately add dry ingredients and buttermilk in three additions, beginning and ending with flour mixture. Mix until just combined.
08 -
Gently fold beaten egg whites into batter by hand using rubber spatula to maintain lightness and prevent dense texture.
09 -
Divide batter evenly between prepared pans. Bake 35-40 minutes until toothpick inserted in center comes out clean. Cool in pans 15 minutes, then turn onto wire racks.
10 -
In saucepan, whisk egg yolks, evaporated milk, and brown sugar. Add butter and cook over medium-low heat, stirring constantly, until thickened, about 12 minutes. Remove from heat and stir in coconut, pecans, vanilla, and salt. Cool to room temperature.
11 -
Heat cream and corn syrup until boiling. Pour over chopped chocolate and let sit 30 seconds. Whisk until smooth and glossy. Cool to pourable consistency.
12 -
Place one layer on serving plate and spread with half the coconut-pecan frosting. Top with second layer and remaining frosting. Drizzle chocolate glaze over top, allowing it to drip down sides.