For best results, use gel food coloring, as it's more concentrated and won't alter the consistency of the batter as much as liquid food coloring. Make sure all your ingredients are at room temperature for even mixing. To prevent the cake layers from sticking, line the bottom of the cake pans with parchment paper rounds. If you don't have six cake pans, you can bake the layers in batches, but ensure the batter doesn't sit out for too long.
Easy Six-Layer Rainbow Cake
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PREP TIME10 mins
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COOK TIME1 hrs 30 mins
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TOTAL TIME3 hrs 40 mins
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SERVING12 People
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VIEWS19
Unleash your inner artist and baker with this show-stopping rainbow cake! Each vibrant layer boasts a distinct hue, creating a stunning visual and a delectable treat. Paired with a light and airy mascarpone cream frosting, this cake is perfect for celebrations or simply brightening up your day.
Ingridients
Adjust Servings
Nutrition
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Carbohydrate47 g
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Cholesterol152 mg
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Fiber1 g
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Protein9 g
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Saturated Fat30 g
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Sodium315 mg
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Sugar22 g
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Fat50 g
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Unsaturated Fat0 g
Follow The Directions
01
StepPreheat oven to 400 degrees F (200 degrees C). Grease and flour six 9-inch round cake pans. (5 minutes)
02
StepSift together the flour, baking powder, and baking soda in a medium bowl. (3 minutes)
03
StepIn a large bowl, beat 3/4 cup plus 2 tablespoons butter, milk, sugar, egg whites, and vanilla extract with an electric mixer until smooth and well combined. Gradually add the flour mixture, mixing until just combined. Be careful not to overmix. (8 minutes)
04
StepDivide the cake batter evenly into 6 separate bowls. Add a different food coloring to each bowl, starting with just 1-2 drops and increasing until you achieve your desired vibrancy. Mix well. (10 minutes)
05
StepBake each cake layer in the preheated oven until a toothpick inserted into the center comes out clean, approximately 15-20 minutes. Let the cakes cool in the pans for a few minutes before inverting them onto a wire rack to cool completely. (20 minutes)
06
StepIn a chilled glass or metal bowl, beat heavy cream with an electric mixer until stiff peaks form. In a separate bowl, gently combine confectioners' sugar and mascarpone cheese until smooth. Fold the mascarpone mixture into the whipped cream until just combined. (12 minutes)
07
StepOnce the cakes are completely cool, place one layer on a serving plate or cake stand. Spread a generous amount of frosting evenly over the top. Repeat with the remaining layers, stacking them to create the rainbow effect. Frost the top and sides of the cake with the remaining mascarpone cream frosting. (20 minutes)
08
StepRefrigerate the cake for at least 2 hours before serving to allow the frosting to set and the flavors to meld. (120 minutes)
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Haley Schowalter
Jul 1, 2025This cake was so much fun to make, and it looked amazing! Everyone loved it!
Giovani Koch
Jun 28, 2025Be careful not to overmix the batter. Overmixing will develop the gluten and make the cake tough.
Adonis Jacobi
Jun 25, 2025I found that using a kitchen scale to divide the batter evenly between the bowls was helpful.
Delmer Brekke
Jun 22, 2025Next time, I'm going to try adding a layer of fruit filling between the cake layers.
Luciano Watsica
Jun 3, 2025The mascarpone frosting is the perfect complement to the colorful cake layers. Not too sweet and very creamy.
Aaliyah Nolan
May 9, 2025I made this for my daughter's birthday, and it was a huge hit! Thanks for the great recipe!
Lucy Rutherford
May 2, 2025This recipe is a keeper! It's definitely going into my recipe box.
Everardo Bergnaum
Apr 29, 2025I was a little intimidated by the number of steps, but it was totally worth it!
Bennie Crist
Apr 27, 2025The instructions were easy to follow, and the cake turned out perfectly on my first try!
Kennith Gleichner
Apr 23, 2025I used a different brand of food coloring, and the colors weren't as vibrant as I expected.