Chocolate Buttermilk Three-Layer Cake

• 4 ounces semisweet baking chocolate
• 1/2 cup boiling water
• 1 cup unsalted butter softened
• 2 cups sugar
• 4 large eggs
• 2 3/4 cups Swans Down Cake Flour sifted
• 1/2 teaspoon salt
• 1 teaspoon baking soda
• 1 cup buttermilk
• 1 teaspoon vanilla extract
• 1/3 cup unsalted butter softened
• 2 1/4 cups confectioners sugar
• 1/4 cup milk
• 1 teaspoon butter extract
• 1/2 cup butter softened
• 4 cups confectioners sugar divided
• 1 teaspoon vanilla extract
• 3 ounces unsweetened chocolate melted and cooled
• 1/4 cup milk

1. Preheat oven to 350u0b0. Spray 3 (9-inch) cake pans with baking spray with flour; line bottom of pans with parchment paper rounds; spray again and set aside.
2. In a small bowl, combine chocolate and boiling water, whisk until smooth and melted; set aside. In a medium bowl, beat butter with an electric mixer at medium-high speed until creamy, about 2 minutes. Add sugar and beat until light and fluffy, about 3 minutes. Add eggs, one at a time, beating well after each addition.
3. In a separate medium bowl, combine flour and salt. Add baking soda to buttermilk, stirring to dissolve. Reduce mixer speed to low. Alternately add flour mixture and buttermilk to butter mixture, beginning and ending with flour mixture. Add chocolate and vanilla, beating to combine. Divide batter among prepared pans, smoothing the surface. Bake for 30 to 35 minutes, or until a wooden pick inserted near the center comes out clean. Remove from oven and cool in pans for 10 minutes. Remove to wire racks to cool completely for at least 4 hours. Frosting a warm cake may make your frosting turn runny. The only exception is if the recipe explicitly directs you to do so.
4. In a medium bowl, beat butter with an electric mixer at medium-high speed until creamy, about 2 minutes.
5. Add sugar and beat until light and fluffy, about 3 minutes. Add milk, 1 tablespoon at a time, beating until mixture is spreading consistency. Add butter extract, beating to combine. Use immediately.
6. Chocolate Butter Frosting: In a medium bowl, beat butter and 2 cups of sugar with an electric mixer until creamy, about 2 minutes.
7. Add vanilla and melted chocolate and beat until smooth. Add remaining sugar and beat to combine. Add milk, 1 tablespoon at a time, until mixture is spreading consistency. Use immediately.
8. Spread Butter Filling between layers of cake. Spread Chocolate Butter Frosting on sides and top of cake. Store at room temperature in an airtight container for up to 5 days.

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Taken from www.yummly.com/recipe/Chocolate-Buttermilk-Three-Layer-Cake-760178 (may not work)