To make the cake:

Cup of Yum
1. Preheat the oven to 350 degrees.
2. In your stand mixer cream the butter and sugar together until much lighter in color, like a easter-y spring yellow (2-3 minutes)
3. Add in the egg whites and vanilla until totally combined
4. Add the salt and baking powder to the flour
5. Add in the dry ingredients and the milk alternating 1 cup of flour and ½ cup of milk at a time
6. Add one cup of the batter to 6 different bowls. Color each bowl with your gel food coloring in red, orange, yellow, green, blue and purple.
7. Mix until the colors are fully combined.
8. Your choice here: Spoon or ziploc bags. Either add the batter to 6 sandwich size ziploc bags and pipe just enough to make a thin layer of each color OR with a small spoon, spoon a layer.
9. Start with purple, then blue, then green, then yellow, then orange and finally red.
10. Bake for 30-35 minutes or until the middle of the cake is fully baked and let cool on a rack.
11. Poke holes on the top of the cake, I do about 25 of them.
12. Pour the condensed milk over the holes.

To make the frosting:

1. Add the gelatin to your cold water in a small bowl and mix. Let it sit, to bloom, for five minutes.
2. In your stand mixer add the heavy cream, powdered sugar and clear vanilla.
3. After the gelatin has set, put it in your microwave for 5-10 seconds to melt the gelatin.
4. With your paddle attachment(I LOVE LOVE LOVE this one with a built in scrapefor a minute to start building the peaks of the whipped cream and giving the gelatin time to cool a bit.
5. Add in the gelatin and continue beating until you have soft-stiff peaks (where the tip of the peak will still fall but it otherwise holds the same shape).
6. Pour onto your cake and spread.
7. Your frosting should be SUPER light and fluffy, just like a delicious bright white vanilla cloud if you used clear vanilla.