Divide batter among prepared cake pans. Bake in preheated oven 25 - 29 minutes until toothpick inserted into center comes out clean. Cool in pans several minutes, run knife around edge to make sure they are loose, then invert onto wire racks to cool (once halfway cool I recommend wrapping with plastic wrap until completely cool). Frost with chocolate buttercream once cool.
Recipe source: Cooking Classy