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A towering six-layer rainbow cake with smooth white buttercream frosting and cascading sprinkles, displayed on a rose gold turntable against a white marble countertop, illuminated by soft natural light.

Rainbow Layer Birthday Cake: A Colorful Celebration Masterpiece

Key InformationContentsKey InformationEssential EquipmentMust-Have ToolsPro Tip GearIngredients LineupCake BaseColoring MagicPreparation MasterclassPrep Like a ProMixing TechniqueBaking SecretsAssembly WizardryLayer OrderFrosting TechniquePro TroubleshootingCommon MistakesStorage & ServingVariationsBonus TipsKeywords Prep Time: 45–60 minutes Cook Time: 30–40 minutes per batch Total…