Ingredients:
- 2 ½ cups (300g) all-purpose flour, plus more for dusting
- 1 teaspoon (5g) baking powder
- ½ teaspoon (2.5g) baking soda
- ½ teaspoon (3g) salt
- 1 cup (227g) unsalted butter, softened, plus more for greasing
- 1 ¾ cups (350g) granulated sugar
- 2 large eggs
- 1 teaspoon (5ml) vanilla extract
- 1 cup (240ml) buttermilk
- 1 cup (227g) unsalted butter
- 2 cups (400g) granulated sugar
- 1 cup (240ml) evaporated milk
- 1 teaspoon (5ml) vanilla extract
- Pinch of salt
Instructions:
- Grease and flour three 9-inch round cake pans. Line the bottoms with parchment paper rounds.
- Whisk together flour, baking powder, baking soda, and salt in a medium bowl.
- In a large bowl, cream together butter and sugar until light and fluffy using an electric mixer.
- 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. Do not overmix.
- Divide the batter evenly among the prepared cake pans. Bake in a preheated oven at 350°F (175°C) for 30-35 minutes, or until a wooden skewer inserted into the center comes out clean.
- Let the cakes cool in the pans for 10 minutes, then invert them onto a wire rack to cool completely.
- Combine butter, sugar, and evaporated milk in a saucepan over medium heat. Bring to a boil, stirring constantly.
- Reduce heat and simmer, stirring constantly, until the mixture reaches a light golden brown color and coats the back of a spoon (or reaches 235-240°F on a candy thermometer, soft-ball stage). This takes about 10-15 minutes. Be careful not to burn the caramel!
- Remove from heat and stir in vanilla extract and a pinch of salt. Let cool slightly for a few minutes, stirring occasionally, until the frosting thickens enough to spread. It shouldn't be too hot or it will melt the cake.
- Place one cake layer on a serving plate. Spread with a generous amount of caramel frosting. Repeat with the remaining layers.
- Frost the top and sides of the cake with the remaining caramel frosting. Work quickly, as the frosting will continue to thicken as it cools.
- Allow the frosting to set before serving.