Once all halves have been cut, you can either assemble the halves to make one, two-layer cake, or two single-layer butterfly cakes. Read more: 11 Store-Bought Chocolate Cakes, Ranked Worst To Best ...

Using a serrated knife, split each cake in half horizontally. Set a top layer, cut side up, on a cake plate; brush it with 2 tablespoons of the rum and spread with 1/2 cup of the filling.

Instead of making one cake layer at a time, ... Unroll about 16 inches of parchment, and cut it in half, aiming the scissors perpendicular to the direction the paper is rolling, ...