The pudding and the coconut milk for sure. The pudding adds a rich, creaminess to the cake. The fat content in the coconut milk makes it moist and tender, and able to hold up under the mounds of delicious frosting.
Sure! Simply switch out the 9×13 pan in the recipe for 2 9 inch round cake pans. Bake as directed, then cool. Frost as desired for a layer cake.