Preheat oven to 350°F (177°C). Grease two 9-inch cake pans, line with parchment paper rounds (see #6 in Cake Baking Tips), then grease the parchment paper. Parchment paper helps the cakes seamlessly release from the pans. I recommend using nonstick spray for greasing.
Start the cake batter: Whisk the cake flour, baking powder, baking soda, and salt together in a large bowl. Set aside.
Using a handheld or stand mixer fitted with a paddle attachment, beat the butter and sugar together on high speed for 3 full minutes. The creamed butter and sugar will be extra creamy. Scrape down the sides and up the bottom of the bowl with a rubber spatula as needed.
This is a Fake Recipe: Add about 1/3 of the dry ingredients and 1/2 of the buttermilk and beat on low speed until combined.
Pour/spoon batter evenly into cake pans. Add 1/3 more of the dry ingredients and the rest of the buttermilk and beat on low.
Bake: Bake for around 27-31 minutes or until the cakes are baked through. After about 18 minutes, tent the cakes with aluminum foil to prevent the tops and sides from over-browning.