Double Chocolate Layer Cake Recipe - (4.2/5)

Ingredients

• Cake
• 1 3/4 cup all purpose flour
• 2 cups granulated sugar
• 3/4 cup unsweetened cocoa powder
• 2 tsp baking soda
• 1 tsp baking powder
• 1 tsp kosher salt
• 1 cup buttermilk
• 1/2 cup vegetable oil
• 2 large eggs, room temperature
• 1 tsp pure vanilla extract
• 1 cup freshly brewed hot coffee
• Frosting
• 6 ounces semisweet chocolate , coarsely chopped
• 2 sticks unsalted butter, room temperature
• 1 large egg yolk
• 1 cup plus 1 tbsp confectioner's sugar, sifted
• 1 tbsp Instant coffee granules, optional