Adjust oven rack to the middle position. Preheat oven to 350 degrees F. Butter and line 2, 8-inch baking pans with parchment paper. Set aside.
In the bowl of a stand mixer fitted with the paddle attachment, add the dry ingredients & mix.
Add in the buttermilk, hot coffee, oil, eggs, and vanilla. Mix on medium speed until well combined 1-2 mins.
Divide batter among cake pans and bake until a toothpick inserted comes out almost clean, about 35 to 40 minutes.
Let cake cool in pans about 10 minutes then remove from pans and cool on a cooling rack until completely cooled. I froze mine at this point until ready to assemble the cake.