01 -
Preheat the oven to 350°F (175°C). Grease two 9-inch round cake pans with butter and dust lightly with flour. Line the bottoms with parchment paper for better release.
02 -
In a medium bowl, sift together the flour, baking powder, baking soda, and salt to remove lumps and ensure a fine texture.
03 -
In a large mixing bowl, beat the butter and granulated sugar until light and fluffy for about 3-4 minutes using an electric mixer on medium speed.
04 -
Add the eggs to the butter mixture one at a time, beating well after each addition for a smooth, rich texture.
05 -
Add the vanilla extract and bourbon. Beat until just combined, avoiding overmixing.
06 -
Reduce mixer speed to low. Gradually add the dry ingredients in three parts, alternating with the buttermilk in two parts. Begin and end with the dry ingredients. Mix just until combined.
07 -
Divide the batter evenly between the prepared pans. Smooth the tops with a spatula for an even rise.
08 -
Bake in the preheated oven for 35 minutes, or until a toothpick inserted into the center comes out clean. Cool in pans for 10 minutes, then transfer to a wire rack to cool completely.
09 -
In a large bowl, beat the butter on medium speed until creamy. Gradually add powdered sugar one cup at a time, alternating with heavy cream, until fluffy. Mix in vanilla extract and bourbon until smooth.
10 -
Place one cake layer on a serving plate. Spread frosting over the top. Add the second layer and frost the top and sides. Use an offset spatula to create swirls or a smooth finish.