Ingredients:
- 2 1/2 cups (300g) all-purpose flour, plus more for dusting the pan
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1 cup (227g) unsalted butter, softened
- 1 3/4 cups (350g) granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 cup (240ml) buttermilk
- 1/2 cup (120ml) hot brewed coffee
- 1 cup (200g) granulated sugar
- 6 tablespoons (85g) unsalted butter, cut into pieces
- 1/2 cup (120ml) heavy cream
- 1/4 teaspoon salt
- 2 cups (227g) powdered sugar, sifted
Instructions:
- Preheat oven to 350°F (175°C). Grease and flour cake pans; line the bottoms with parchment paper rounds.
- In a medium bowl, whisk together flour, baking powder, baking soda, and salt.
- In a large bowl (or stand mixer bowl), cream together softened butter and granulated sugar until light and fluffy.
- Beat in eggs one at a time, then stir in vanilla extract.
- Gradually add the dry ingredients to the wet ingredients, alternating with the buttermilk, beginning and ending with the dry ingredients. Mix until just combined. Don’t overmix!
- Gently stir in the hot coffee until the batter is smooth.
- Divide batter evenly between the prepared cake pans. Bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
- Let cakes cool in pans for 10 minutes, then invert onto a wire rack to cool completely.
- In a medium saucepan over medium heat, melt granulated sugar, stirring constantly, until it becomes a deep amber color. Be patient and watch carefully - it can burn quickly!
- Remove from heat and stir in the butter and heavy cream. It will bubble vigorously, so be careful!
- Return to medium heat and cook, stirring constantly, until smooth. Stir in salt. Remove from heat and let cool slightly, about 10 minutes.
- Gradually add powdered sugar to the caramel mixture, beating until smooth and creamy.
- Place one cake layer on a serving plate. Spread with a generous layer of caramel frosting. Top with the second cake layer and frost the top and sides of the cake.
- Chill the frosted cake for at least 30 minutes to allow the frosting to set.