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Rainbow Surprise Bundt Cake Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.5 from 119 reviews
  • Author: Villerius
  • Prep Time: 30 minutes
  • Cook Time: 45 minutes
  • Total Time: 1 hour 15 minutes
  • Yield: 12 slices
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

This Surprise Rainbow Bundt Cake features a moist, fluffy white cake with a magical hidden rainbow spiral inside. Using a combination of all-purpose and cake flour, along with butter and coconut oil, this cake is dense yet tender, with vibrant colors created by gel food coloring. The cake is baked in a bundt pan, unveiling a colorful, visually stunning surprise in every slice perfect for celebrations and special occasions.

Ingredients

Scale

Dry Ingredients

  • 260g all purpose flour
  • 100g cake flour
  • 2 tsps baking powder
  • 1 tsp fine sea salt

Wet Ingredients

  • 226g unsalted butter, softened
  • 75g coconut oil
  • 400g fine granulated sugar
  • 2 tsps pure vanilla extract
  • 1 tsp imitation vanilla
  • 4 large egg whites
  • 240g buttermilk

Additional

  • Gel food coloring (red, yellow, green, blue, purple)

Instructions

  1. Prepare Bundt Pan: Preheat your oven to 350°F (175°C). Butter and flour a large bundt pan thoroughly to ensure the cake releases easily after baking.
  2. Sift Flours: Sift together the all-purpose flour and cake flour into a bowl. Set this aside; this helps to aerate the flours and remove any lumps for a smoother batter.
  3. Cream Fats and Sugar: In a separate large mixing bowl, cream the softened butter, coconut oil, granulated sugar, sea salt, pure vanilla extract, imitation vanilla, and baking powder together. Beat them for a full 5 minutes until the mixture becomes very light and fluffy, creating the base for a tender cake.
  4. Add Egg Whites: With the mixer running, incorporate the egg whites one at a time, allowing each to fully integrate before adding the next. This encourages volume and stability in the batter.
  5. Combine Dry and Wet Ingredients: Add the sifted flour mixture into the wet mixture. Turn the mixer on low and slowly drizzle in the buttermilk to avoid overmixing, just until everything is combined into a smooth batter.
  6. Divide and Color Batter: Divide 1/3 cup of the batter into five separate bowls. Add a different gel food coloring to each bowl: red, yellow, green, blue, and purple. Stir each until colors are evenly combined.
  7. Fill Bundt Pan with Base Batter: Pour the majority of your remaining uncolored batter (more than 2/3 of it) into the prepared bundt pan, leaving space on top for the rainbow layer.
  8. Prepare Colored Batters for Piping: Transfer each colored batter into individual piping bags. Snip off the tips for controlled piping. Use the back of a teaspoon to create a shallow moat or space in the white batter where the rainbow colors will be piped.
  9. Pipe Rainbow Colors: Pipe a red circle into the moat first. Use the back of a spoon to gently smooth it out so it is wide but leaves a white border on both inner and outer edges. Continue adding yellow, green, blue, and purple colors in concentric circles, each decreasing in width and leaving borders between colors as described.
  10. Top the Rainbow: Spoon the remaining white batter on top carefully using an offset spatula to cover the rainbow layers without pressing down or mixing.
  11. Bake the Cake: Bake for approximately 45 minutes, starting to check for doneness at 40 minutes. The cake is done when it springs back to a gentle touch.
  12. Cool and Unmold: Allow the cake to cool in the bundt pan for about 15 minutes. Then invert it onto a cooling rack and let it cool completely before slicing to reveal the rainbow surprise inside.

Notes

  • This bundt cake surprises everyone with a hidden rainbow spiral inside a classic white cake exterior.
  • Use gel food coloring to achieve the most vibrant, vivid colors without affecting batter consistency.
  • Be careful when smoothing and layering the colored batters to keep the rainbow pattern distinct.
  • Allow cake to cool before cutting to maintain the rainbow design when sliced.

Nutrition

  • Serving Size: 1 slice (1/12th of cake)
  • Calories: 380
  • Sugar: 28g
  • Sodium: 180mg
  • Fat: 22g
  • Saturated Fat: 12g
  • Unsaturated Fat: 8g
  • Trans Fat: 0g
  • Carbohydrates: 38g
  • Fiber: 1g
  • Protein: 5g
  • Cholesterol: 65mg

Find it online: https://emilyscook.com/rainbow-surprise-bundt-cake-recipe/