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A good recipe of rainbow cake can be quite appetizing. It adds colour as well as flavour to any party.
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To this, you would require 2 1/2 cups of all-purpose flour, 2 1/2 teaspoons of baking powder, 1/2 teaspoon of salt, 1 cup of unsalted butter softened, 2 cups granulated sugar, four large eggs, one tablespoon of vanilla extract, and 1 cup of whole milk.
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For those fabulous layers, you will need food colouring in red, orange, yellow, green, blue, and purple. For frosting, you will mix one cup of softened unsalted butter, four cups of powdered sugar, 2 to 4 Tbsp heavy cream or milk, and one teaspoon of vanilla extract.
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Optionally, you can use even more food colouring to decorate and add rainbow sprinkles to make it more festive. First, preheat your oven to 350 F or 175 C.
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Grease three 9-inch round cake pans with butter or cooking spray and line the bottoms with parchment paper. Whisk together the flour, baking powder, and salt in a medium bowl. In a large mixing bowl, with an electric mixer at medium speed, cream the softened butter and granulated sugar until light and fluffy-3 to 5 minutes.
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Air will be incorporated into the batter for a lighter, more tender cake.
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Add eggs one at a time, mixing well after each addition, then add the vanilla extract to flavour.
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Add dry ingredients to the wet mixture gradually, alternating with milk, beginning and ending with the dry mix.
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Stir just until combined; do not overmix, as that is probably what will ruin your cake for being too dense.
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Put the prepared batter into six individual bowls.
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Add a few drops of food colouring to each bowl and stir until the colour comes out: red, orange, yellow, green, blue, and purple. Fill the colours with vibrancy according to your choice. Put the coloured batters into each of the prepared cake pans, and if your oven is small in size so that all three are not being baked simultaneously, bake them in lots. Bake until the cake tests are done; that is when a toothpick inserted in the centre will come out clean.
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Remove the cakes from the pans and let cool on wire racks for about 10 min. Let them cool completely. In a large mixing bowl, cream soft butter. Gradually add powdered sugar and mix with low speed until well combined.
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Then add heavy cream and vanilla extract, and beat at high speed for about 3-5 minutes until the frosting is light and fluffy.
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Add more cream if you want a liquidier consistency to your frosting.
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Once your layers cool, it's time to build the cake, so start with the purple layer on a serving plate spread atop the first layer of frosting, then the blue layer.
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Green, yellow, orange, and red layers of buttercream follow, spreading a layer of frosting between each layer.
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Place all the layers on top of one another, and then frost the top and sides of the cake using the rest of the buttercream.
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Finally, you may pipe in further decorations with the help of food colouring and sprinkle rainbow sprinkles on top.
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Slice into this appetizing rainbow cake and watch it delight your guests.
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This visually tasteful cake is not just delicious but joy and good cheer for any occasion. It would be a memorable centrepiece in celebrations. Happy eating this savoury rainbow cake!