Just in time for St. Patrick's Day I present to you a Hidden Rainbow Cake by way of Buttermilk by Sam. Don't you just love how the vibrant colors look against the white cake? There was definitely some trepidation on my part when I cut that first slice as I wondered if the hidden design would actually come through. Although it did, I wish the rainbow itself would have been suspended more in the middle of the cake. Oh well, something to strive for the next time I make this cake!
The cake itself is a real winner too, with a tender crumb and the most delicious vanilla flavor. Never one to need an excuse to buy another cake pan I baked the cake in this ring mold, per the recommendation of the recipe's creator. My theory is that the rainbow didn't bake in the center of the cake because I didn't put enough of the white batter in the bottom of the mold, which meant too much batter was leftover at the bottom. As I re-read the previous sentence it sounds totally confusing, but if you just remember that the top of the baked cake is actually the bottom of the ring mold it will start to make some sense.
I can envision many variations of this hidden design cake; don't limit yourself to just a rainbow. You could tint the design using one color, but make it with an ombré effect, from lighter to darker tones. Whatever colors you end up choosing I can guarantee that it will impress whoever eats this cake!