Colorful and delicious! This is so fun to make with the kids. This is also a great cake to bake for birthday parties!
3 cups flour
4 teaspoons baking powder
1/2 teaspoon salt
1 cup butter, softened
2 1/2 cups sugar
5 egg whites
1 teaspoon vanilla
1 1/2 cups milk
Red, orange, yellow, green, blue, and purple food coloring. (I prefer gel)
- Preheat the oven to 350 degrees. Do this before you get started making the batter.
- Mix the dry ingredients. Sift the flour, baking powder, and salt in a small mixing bowl. Use a whisk to stir the ingredients and make sure they are well mixed.
- Combine the wet ingredients. In a large mixing bowl, cream the butter and sugar using a hand or stand mixer, or by vigorously mixing the ingredients with a spoon or spatula. Keep beating or stirring the ingredients while you slowly add the egg whites to the mixture. Add the vanilla and milk and continue mixing until all of the wet ingredients are combined.
- Stir in the flour mixture. Add about half of the dry mixture to the wet ingredient and stir. Then add the rest in and mix until well incorporated.
- Divide and dye the batter. Pour equal amounts of batter into six different bowls. Dye each bowl of batter a different color of the rainbow by pouring in a few drops of the six different food colorings. Stir each bowl of batter well, continuing to add more food coloring until the batter reaches the color you like.* If you use gel food coloring, you only need a drop or two to achieve a rich hue. If you're using liquid food coloring, you may need to use several drops.If you have a standard set of food coloring that comes with red, yellow, blue and green, create the extra colors by combining the colors you have. Orange= red +yellowPurple = blue + red
- Scoop the batter into two greased cake pans. Use a small measuring cup to scoop some red batter into a a cake pan. Use a different cup to scoop some yellow batter into the same pan. The two colors can touch, but don't pour one directly on top of another. Continue scooping different-colored batters into the cake pan until you've used half the batter from all of the bowls. Repeat with the second cake pan and the remaining batter.
- Bake the cake in the oven for about 25 minutes, or until a toothpick comes out clean. Don't over bake the layers, as this could affect the rainbow colors; avoid letting the tops get brown.When the layers are ready, remove them from the oven and let them cool.