Ingredients:
- 2 cups (240g) all-purpose flour
- 1 ½ teaspoons baking powder
- ½ teaspoon baking soda
- ½ teaspoon salt
- ¾ cup (170g) unsalted butter, softened
- 1 ¼ cups (250g) granulated sugar
- 3 large eggs, at room temperature
- 1 teaspoon vanilla extract
- 1 cup (240ml) buttermilk, at room temperature
- 2 cups (480ml) whole milk
- ½ cup (100g) granulated sugar
- 1 tablespoon vanilla extract
- 3 large egg yolks
- ¼ cup (30g) cornstarch
- 2 tablespoons (28g) unsalted butter
- 6 ounces (170g) semi-sweet chocolate, chopped
- ½ cup (120ml) heavy cream
Instructions:
- Preheat the oven to 350°F (175°C). Grease and flour the cake pans.
- In a bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
- In a mixing bowl, cream butter and sugar until light and fluffy.
- Add eggs, one at a time, mixing well; then stir in vanilla.
- Gradually add dry ingredients and buttermilk, alternating in thirds.
- Divide batter between prepared pans and smooth the tops.
- Bake for 25-30 minutes, or until a toothpick comes out clean.
- Let cakes cool in pans for 10 minutes, then transfer to wire racks to cool completely.
- In a saucepan over medium heat, combine milk and ¼ cup sugar until steaming.
- In a bowl, whisk egg yolks, cornstarch, and remaining sugar.
- Gradually add hot milk to yolks, whisking constantly.
- Return mixture to saucepan and cook until thickened, about 2-3 minutes.
- Remove from heat and stir in butter and vanilla. Strain if desired. Chill until set.
- Heat cream in a saucepan until it just simmers.
- Pour cream over chopped chocolate in a bowl; let sit for 5 minutes, then stir until smooth.
- Place one cake layer on a serving platter. Spread pastry cream over the top.
- Add the second layer of cake and pour chocolate ganache over the top, allowing it to drip down the sides.
- Chill for about 30 minutes before serving.