1 ¼ cup (310ml) buttermilk (or make your own by adding 1 tablespoon + ¾ teaspoon vinegar to 1¼ cup milk)
½ cup (125ml) light vegetable oil
2 teaspoons vanilla
1 ½ teaspoons red gel food coloring (I use Wilton Red Red)
1 tablespoon white vinegar
For the cream cheese frosting
8 oz (226g) cream cheese, full-fat
½ cup (113 g / 4 oz) unsalted butter, at room temperature
4-5 cups (500g-650g) powdered sugar
1 teaspoon vanilla
Instructions
Preheat the oven to 350F / 180C.
Grease, flour and then line the bottoms of the cake pans with parchment paper. Set them aside.
Make the cakes
Whisk together the flour, cocoa powder, baking soda, baking powder and salt in a mixing bowl.
Pour in the buttermilk, vanilla, oil, vinegar and food coloring to the dry ingredients. Use the hand mixer to mix everything until just combined.
Pour the cake batter into the prepared pans. (To get equal layers, I like to weigh the batter first and then evenly distribute it.)
Bake the cakes for about 35 minutes or until a toothpick inserted in the middle comes out clean.
Let the cakes rest in the pans for about 10 minutes. Then run a knife around the edges, turn the pans upside down and remove the cakes. Transfer them to a cooling rack to cool completely before frosting.
Trim the tops. Use a box grater to make crumbs with them. Set aside.
Make the cream cheese frosting
In a large mixing bowl, beat the butter on high speed for about 5 minutes, until it's creamy and fluffy.
Then gradually add the powdered sugar. (I usually add it in 2 or 3 batches.)
Add the vanilla and cream cheese and mix until everything is well combined.
If your frosting is too thin, add a bit more powdered sugar and place it in the refrigerator to thicken. If it's too thick, you can add a little milk, a teaspoon at a time, to thin it out a bit.
Assemble the cake
Place one cake layer on a serving plate or cake stand and spread about 1 cup frosting on top. (I use an offset spatula to even it out.)
Then add the second cake layer on top with the bottom side facing up. Spread frosting on the top and sides. Use a bench scraper or an offset spatula to smooth out the sides.