Best Rainbow Sheet Cake Recipes

RAINBOW PETAL SHEET CAKE

Steps:

• Heat oven to 350°F (325°F for dark or nonstick pans). Grease bottom only of 1 (13x9-inch) pan. Make cake mix as directed on box using water, oil and eggs.
• Bake 28 to 32 minutes or until a toothpick inserted in center comes out clean. Cool 10 minutes in pan; remove from pan to cooling rack. Cook completely, about 1 hour.
• Meanwhile, beat butter with an electric mixer on low speed until creamy. Beat in the powdered sugar, 1 cup at a time, until smooth. Add vanilla and milk, 2 tablespoons at a time until well combined. If frosting is too thick, beat in more milk.
• Use 1/2 cup frosting to frost a thin layer over entire cake. Divide remaining frosting into four bowls (about 3/4 cup frosting in each bowl). Mix blue, purple, green and orange food color, one into each bowl, until desired hue is reached.
• Place each color in individual resealable food-storage plastic bag. Cut 1/2 inch off one corner of each bag. Pipe a dot of blue frosting and use back of teaspoon to pull frosting slightly. Repeat with remaining colors, alternating colors as you cover cake, slightly overlapping dots of frosting.

RAINBOW SHEET CAKE

Steps:

• Make cake batter according to box directions.
• Separate prepared batter into small bowls. You should have 6-8 bowls full of batter.
• Mix 10-12 drops of food coloring into 1 small bowl of batter. Mix thoroughly to blend color. Repeat with the different bowls, creating different colors.
• Grease rectangular cake pan. Pour 1 bowl full of batter into corner of the pan, Taking next bowl full, pour next to the first color. Continue with additional colors until bottom of pan is covered.
• Repeat the above process with the second layer. Don't worry about the colors mixing. As long as you simply pour the batter on top of, or next to the other color, it will be okay.
• When finished, cook cake according to box directions. When done, cool thoroughly.
• FOR FROSTING: Make the instant pudding only using half as much milk as called for. Place in refrigerator until set. The pudding will be very thick. Fold in Cool Whip and blend well. Spread over cooled cake.