Rainbow Vertical Cake Recipes

RAINBOW LAYER CAKE

Steps:

• Preheat oven to 350°. Line bottoms of three greased 9-in. round baking pans with parchment; grease paper., Prepare cake mix batter according to package directions, substituting three whole eggs for egg whites. Divide evenly among three bowls. Stir one flavor of gelatin into each bowl until blended. Pour each into a prepared pan. Bake 20-25 minutes or until a toothpick inserted in center comes out clean., Cool in pans 10 minutes before removing to wire racks; remove paper. Cool completely. Spread frosting between layers and over top and sides of cake. , Freeze option: Wrap cooled cake layers in plastic wrap, then cover securely in foil; freeze. To use, thaw cakes before unwrapping. Assemble as directed.

RAINBOW CAKE

Steps:

• Heat the oven to 350 degrees. Lightly grease three 9-inch round cake pans with nonstick cooking spray, then add a couple tablespoons of flour to each pan. Shake and rotate each pan until the flour fully coats the inside. Discard the excess flour.
• In a medium bowl, whisk the 3 2/3 cups flour with the baking powder and salt to combine. In a separate medium bowl, whisk the egg whites vigorously until lightly foamy, about 1 minute. Add the milk and whisk to combine.
• In the bowl of an electric mixer fitted with the paddle attachment, cream the sugar, oil and butter on medium speed until light and fluffy, 4 to 5 minutes, scraping down the sides as needed. Reduce the speed to low. Add the vanilla extract and mix to combine.
• Add a quarter of the flour mixture to the bowl and mix on low speed until combined. Add a third of the egg white mixture and mix until combined. Continue to add the dry and wet ingredients, alternating until both are fully incorporated and the batter is smooth, scraping the sides as needed.
• Divide the batter evenly among the three cake pans. (You'll want about 2 1/3 cups/575 to 600 grams of batter in each pan.) Spread the batter in each pan into an even layer. Bake until the surface is evenly golden brown, the cake appears to have pulled away from the pan at the top edges and the center of the cake springs back gently when touched, 30 to 35 minutes.
• While the cakes bake, make the frosting: In a medium saucepan over medium heat, combine the milk with 1/2 cup/100 grams granulated sugar, stirring occasionally, until the mixture comes to a simmer. Meanwhile, whisk the remaining 1 cup/200 grams granulated sugar with the cornstarch and salt in a large bowl until combined. Add the egg yolks and whisk until smooth.
• Pour about 1 cup of the hot milk into the yolk mixture and whisk to combine. Add the yolk mixture to the saucepan and whisk to combine. Reduce the heat to low. Cook, stirring constantly with a silicone spatula, until it thickens enough to coat the back of the spatula, 3 to 5 minutes.
• Strain the mixture through a fine-mesh sieve into a medium heat-safe bowl. Cover the surface directly with plastic wrap or a wet paper towel and refrigerate until no longer warm, about 1 hour. If making the piped version, make a separate half-batch of the custard now (see Tip 2).
• When the cakes are baked, cool them in the pan for 10 minutes, then invert them onto a cooling rack to cool completely.
• When the custard has cooled, finish the frosting: Transfer the custard to the bowl of an electric mixer fitted with the whip attachment, and beat on medium speed until smooth, about 1 minute. With the mixer running and a splash guard attached or a kitchen towel draped over your mixer to contain splashes, add the butter about 2 tablespoons at a time, mixing until the butter is combined between each addition, about 20 seconds.
• Increase the speed to medium-high. The mixture may look uneven and lumpy, but keep whipping until it becomes silky smooth and lightens in color, 5 to 7 minutes. Add the vanilla and mix to combine. (If making the piped version, finish the extra half batch of frosting now. Combine batches before dividing, coloring and frosting.)
• Use a serrated knife to slice each cake horizontally into two even rounds to form six cake layers: Place the first cake on a cake decorating turntable or flat plate. Use the knife to cut into the cake by holding the knife horizontally with the sharp side facing the cake, halfway up the side of the cake. Lightly cut into the cake by slicing into the outer perimeter of the cake all the way around, rotating the turntable or plate as you score it. Once you've created a marker around the outside of the cake as a visual guideline, continue rotating and moving the knife deeper into the cake to divide the cake into two even layers. Repeat with the other two cakes.
• Evenly divide the frosting into six bowls (you should have about 1 1/4 cups each). Use food coloring gel or paste to color the frosting red, orange, yellow, green, blue and purple. Start with a few drops and add more as needed. Mix thoroughly.
• Working with one cake round on the cake decorating turntable or flat plate, use a pastry brush to brush away any extra crumbs that have collected before frosting. Scrape about 1/3 cup red frosting on top of the cake layer, in the center, and use a medium offset spatula to spread it into an even layer, spreading it all the way to the edge of the cake. Wipe the spatula clean. Top with another layer of cake, bottom-side up, then scrape about 1/3 cup orange frosting on top of the cake layer, in the center, and spread into an even layer. Continue this process, spreading three more cake layers with 1/3 cup of the yellow, green and blue frostings and wiping the spatula clean after each application. Top with the final cake layer, bottom-side up. (You'll use the purple frosting later.)
• Run a clean offset spatula around the sides of the cake to flatten the edge and smooth out excess frosting between layers that has leaked out on the sides. Refrigerate for 20 minutes to help the frosting set.
• Starting at the bottom of the cake, use a small offset spatula to apply a 1-inch thick stripe of red frosting. Wipe the spatula clean and repeat this process just above the red frosting with the orange frosting. Repeat, wiping the spatula clean between each application, with the yellow frosting, green and blue. The blue should be at the top edge of the cake and around the outer edge of the top surface of the cake. Cover the remaining top of the cake with the purple frosting. (If making the piped version, refer to Tip 3.)
• Hold a clean spatula horizontally flush against the top surface of the cake and slowly rotate the cake to smooth the surface. Clean the spatula and do the same to the sides of the cake, holding the spatula vertically. The colors will blend together to create an ombré effect. Add extra frosting to fix smudges and smooth the surface again. If desired, chill another 15 minutes before serving (this will make it easier to slice).

RAINBOW LAYER CAKE

Steps:

• Heat the oven to 180C/160C fan/gas 4. Butter 2 x 20cm round sandwich tins and line the bases with baking parchment. Tip all the sponge ingredients, apart from the food colouring, into a mixing bowl, then beat with an electric whisk until smooth.
• Working quickly, weigh the mixture into another bowl to work out the total weight, then weigh exactly half the mixture back into the mixing bowl. Pick two of your colours and stir a little into each mix. Keep going until you are happy with the colour - the colour of the batter now will be very similar to the finished cake, so be brave! Scrape the different batters into the tins, trying to spread and smooth as much as possible - but try not to waste a drop of the batter - a rubber spatula will help you. Bake on the same oven shelf for 15-20 mins until a skewer poked into the middle comes out clean. Don't worry if that sponges are thin, there are many layers.
• Gently turn the cakes out onto a wire rack to cool. Wash the tins and bowls thoroughly, and start again from step 1 - this time using another two colours. Unless you're making the optional pink layer, repeat one more time to get 6 sponges, all of different colours. Leave them all to cool.
• To make the icing, very briefly beat the vanilla and soft cheese or mascarpone with an electric whisk until smooth. Sift in the icing sugar and gently fold in with a spatula. Be careful - the more you work it, the runnier it will get, increasing the chance of splitting.
• Smear a little icing on your cake stand or plate - just a splodge to stick the first sponge. Start with the red, then spread with some icing right to the very edge. Repeat, sandwiching on top the orange, yellow, green, blue and finally purple sponges. Spread the remaining icing thickly all over the sides and top of the cake. For more expert advice on how to create the perfect rainbow cake, check out our tips, below.
• Heat the oven to 180C/160C fan/gas 4. Butter 2 x 20cm round sandwich tins and line the bases with baking parchment. Tip all the sponge ingredients, apart from the food colouring, into a mixing bowl, then beat with an electric whisk until smooth.
• Working quickly, weigh the mixture into another bowl to work out the total weight, then weigh exactly half the mixture back into the mixing bowl. Pick two of your colours and stir a little into each mix. Keep going until you are happy with the colour - the colour of the batter now will be very similar to the finished cake, so be brave! Scrape the different batters into the tins, trying to spread and smooth as much as possible - but try not to waste a drop of the batter - a rubber spatula will help you. Bake on the same oven shelf for 15-20 mins until a skewer poked into the middle comes out clean. Don't worry if that sponges are thin, there are many layers.
• Gently turn the cakes out onto a wire rack to cool. Wash the tins and bowls thoroughly, and start again from step 1 - this time using another two colours. Unless you're making the optional pink layer, repeat one more time to get 6 sponges, all of different colours. Leave them all to cool.
• To make the icing, very briefly beat the vanilla and soft cheese or mascarpone with an electric whisk until smooth. Sift in the icing sugar and gently fold in with a spatula. Be careful - the more you work it, the runnier it will get, increasing the chance of splitting.
• Smear a little icing on your cake stand or plate - just a splodge to stick the first sponge. Start with the red, then spread with some icing right to the very edge. Repeat, sandwiching on top the orange, yellow, green, blue and finally purple sponges. Spread the remaining icing thickly all over the sides and top of the cake. For more expert advice on how to create the perfect rainbow cake, check out our tips, below.

RAINBOW CAKE

Steps:

• Preheat oven to 350 degrees F (175 degrees C). Grease and flour three 9 inch square pans.
• Beat eggs in mixing bowl until frothy. Gradually beat in 1 cup sugar. Beat until light colored and thick.
• In another bowl, mix flour, baking powder, and salt together. Fold into egg mixture.
• Into hot milk, stir vanilla and butter until melted. Fold milk mixture into batter. Divide batter in 3 equal parts into separate bowls.
• Add a few drops of red food colouring onto one batter. Stir to mix. Spread into a prepared pan. Add a few drops of yellow food colouring into another batter. Stir to mix. Spread into a prepared pan. Add a few drops of green food coloring into remaining batter. Stir to mix. Spread into remaining pan. To summarize, make three different coloured batters, and pour each into a prepared pan.
• Bake in oven for about 10 to 15 minutes until an inserted wooden pick comes out clean. Let stand 8 to 10 minutes. Turn out onto racks to cool.
• Trim cake layers of rough edges. Cut each layer into 2 even layers.
• Mash apple or crabapple jelly with fork. Spread some over 1 pink layer on tray. Spread 1 green layer with jelly, and place on top. Spread yellow layer with jelly, and place on top of green strip. Repeat with remaining 3 layers in same order, making 6 layers. Spread jelly on top and sides if preferred, but it is not necessary. Trim edges if needed.
• To Make Strawberry Fluff: Place 1 egg white, 1/2 cup sugar, thawed strawberries, and 1/8 teaspoon salt into top of double boiler. Beat with electric beater to mix well. Place over rapidly boiling water. Continue beating while it cooks until stiff peaks form when beater is lifted. Remove frosting from heat, and spread over cake.

END OF THE RAINBOW CAKE

Steps:

• Preheat oven to 350 degrees F (175 degrees C). Grease and flour 2 (8 inch) round pans. Sift together the flour, baking powder, and salt. Set aside.
• In a large bowl, cream together the shortening and sugar until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla and almond extracts. Beat in the flour mixture alternately with the milk, mixing just until incorporated. Pour batter into prepared pans.
• Bake in the preheated oven for 30 to 35 minutes, or until a toothpick inserted into the center of the cake comes out clean. Allow to cool.

VIBRANT RAINBOW CAKE

Steps:

• Grease two 9" round cake pans with shortening and then lightly flour each. Preheat oven to whatever the cake mix directions calls for.
• Mix cake according to box directions, then seperate into 6 bowls (if doing the full rainbow). Since the first color gets spread the furthest it is a good idea to put slightly more in one bowl and a little less in each subsequently after that so the last color has the least amouont of all.
• Mix in GEL coloring until desired color is achieved. Use a little for pastel colors, and use a bit more for bold and vibrant colors. Take care to put the appropriate color in each bowl if you took the extra step to put a little more in your outside color bowls. The rainbow pattern is red, orange, yellow, green, blue, violet.
• Take the first color (red if you are doing the rainbow, and this will be your outside color) and spoon half into the very middle of each cake pan. You can then lightly tip it around a bit to get the color to spread some, but don't worry about it not reaching the sides, because it will by the time you are done.
• Take your next color and carefully pour it directly into the middle of the first color. Once in you can again tip it a bit to spread it out some, but don't stir it or anything as that will mess up the pattern. Do this with each color until you have used all of them -- by this time your outside colors should be pushed out to the edges.
• Bake as stated on your box, and allow to cool for a couple minutes in the pans before trying to remove them. Carefully tip them out onto a wire rack to cool completely (after a couple minutes I also carefully then flipped them right side up so the bottoms were on the rack since the tops tend to stick to the rack if left for too long).
• Once cool, shave a little off one layer to make a flat surface (this is so the other piece can stack without tipping). You can put some sort of filling in between the layers if you want, but I just left them without for mine. Then frost your cake and top with sprinkles!
• *NOTE* this can also be done in a rectangular dish if you prefer and then you would obviously just pour all of each color at a time, and frost it directly in the pan. It might also be fun to try a splatter type pattern, just taking scoops and dropping them into the pan in a swirl motion (not stirring in the pan) or putting into cupcake form. The person who told me about this also mentioned that you can use 2 cake mixes for the round pans and then just use the leftover batter for extra cupcakes or something, but for my family I didn't need quite so much cake.