Rainbow Layer Cake recipe from Betty Crocker. 2 boxes vanilla cake mix divided and colored with gel food coloring. Idea from comments: Use regular whipped canned frosting for middle layers and Cool Whip refrigerated frosting for the outside.
For mums birthday cake! Raspberry Neapolitan Party Cake~ Alternating layers of moist vanilla and dark chocolate cake, filled with raspberry Swiss meringue buttercream and smothered in a trio of dark chocolate, vanilla and raspberry buttercream.