Rainbow Bundt Cake: A Stunning Swirl of Color Wrapped
Rainbow Bundt Cake is a moist vanilla cake featuring vibrant rainbow-colored swirls baked into a decorative Bundt shape. Topped with a simple glaze or frosting, this colorful dessert is perfect for birthdays, celebrations, and holidays. Easy to prepare and visually stunning, it combines rich vanilla flavor with a beautiful rainbow surprise inside every slice. Its cheerful appearance and delicious taste make it a crowd-pleasing favorite for all ages.
Ingredients
For the Cake
- 3 cups all-purpose flour
- 2½ teaspoons baking powder
- ½ teaspoon baking soda
- ½ teaspoon salt
- 1 cup unsalted butter, softened
- 2 cups granulated sugar
- 4 large eggs
- 1 tablespoon vanilla extract
- 1 cup sour cream
- ½ cup whole milk
For the Vanilla Glaze
- 2 cups powdered sugar
- 3–4 tablespoons milk
- 1 teaspoon vanilla extract
Instructions
- Preheat oven to 350°F (175°C).Grease and flour a 10-cup Bundt pan thoroughly.
- In a bowl, whisk together flour, baking powder, baking soda, and salt.In a large mixing bowl, beat butter and sugar until light and fluffy.Add eggs one at a time, mixing well after each addition.Mix in vanilla extract.Alternate adding the dry ingredients with sour cream and milk until smooth.
- Divide the batter evenly into six bowls.
- Spoon alternating colors into the prepared Bundt pan.Continue layering the colors until all batter is used.Lightly swirl with a knife to create a marbled rainbow effect.
- Bake for 45–50 minutes or until a toothpick inserted into the center comes out clean.Allow the cake to cool in the pan for 15 minutes.Carefully invert onto a wire rack and cool completely.
- Whisk together powdered sugar, milk, and vanilla extract until smooth.Adjust consistency if needed.
- Drizzle glaze evenly over the cooled cake.Top with rainbow sprinkles or other decorations if desired.
- Slice and reveal the beautiful rainbow swirls inside.
Notes
- Gel food coloring creates the most vibrant colors.
- Grease the Bundt pan thoroughly to prevent sticking.
- Do not overmix the batter.
- Allow the cake to cool before glazing.
- Sour cream keeps the cake moist and tender.
- Use room-temperature ingredients for best results.
- Avoid excessive swirling to maintain color definition.
- Store covered to preserve freshness.