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Rainbow Layer Cake

Rainbow Layer Cake
  • Prep 30 min
  • Total 2 hr 0 min
  • Servings 10

Full-spectrum "fabulous" is the order of the day when you serve this treat at a kid's birthday or half birthday celebration. The colorful cake is a snap to pull together with Betty Crocker™ SuperMoist® vanilla cake mix and gel food coloring. ...MORE+ LESS-

Angie McGowan Angie McGowan
January 12, 2015

Ingredients

Cake

2
boxes Betty Crocker™ SuperMoist™ vanilla cake mix
2
cups water
1
cup vegetable oil
6
eggs
2
packages (2.7 oz each) Betty Crocker™ classic gel food colors

Buttercream Frosting

1
cup shortening
1
cup butter, softened
1
bag (2 lb) powdered sugar
2
teaspoons vanilla
3
to 4 tablespoons milk

Steps

Hide Images
  • 1
    Heat oven to 350°F. Spray 3 (8-inch) round cake pans with cooking spray.
  • 2
    In large bowl, beat cake mix, water, oil and eggs with electric mixer on low speed 30 seconds, then on medium speed 2 minutes, scraping bowl occasionally. Divide batter evenly among 6 small bowls, about 1 1/3 cups each.
  • 3
    Using food colors, tint batter in 1 bowl blue, 1 bowl red, 1 bowl green, 1 bowl yellow, 1 bowl orange (using red and yellow) and 1 bowl purple (using blue and red).
  • 4
    Refrigerate 3 colors of batter until ready to bake. Pour remaining 3 colors of batter into cake pans.
  • 5
    Bake 18 to 20 minutes or until cake springs back when touched lightly in center and begins to pull away from side of pan. Cool 10 minutes. Remove from pans to cooling racks; cool completely.
  • 6
    Wash cake pans. Bake and cool remaining 3 cake layers as directed.
  • 7
    In large bowl, beat shortening and butter with electric mixer on medium speed until light yellow. On low speed, gradually beat in powdered sugar. Beat in vanilla. Add milk, 1 tablespoon at a time, beating until frosting is smooth. Beat on high speed until light and fluffy.
  • 8
    Trim rounded tops off cakes to level, if needed. On serving plate, place purple cake layer. Spread with frosting to within 1/4 inch of edge. Repeat with blue, green, yellow, orange and red cake layers. Spread light coat of frosting on top and side of cake to seal in crumbs, then frost with remaining frosting.

Expert Tips

  • For a deeper red color, add a teaspoon or two of unsweetened baking cocoa to the red batter
  • If you only have two 8-inch cake pans, bake the cakes in three batches instead.
  • For even better protection against cakes sticking to the pans, line pans with cooking parchment paper cut to fit the pan.

Nutrition Information

Nutrition Facts

Serving Size: 1 Serving
Calories
1280
Calories from Fat
600
% Daily Value
Total Fat
67g
103%
Saturated Fat
23g
116%
Trans Fat
1g
Cholesterol
160mg
54%
Sodium
810mg
34%
Potassium
105mg
3%
Total Carbohydrate
163g
54%
Dietary Fiber
0g
0%
Sugars
127g
Protein
6g
% Daily Value*:
Vitamin A
15%
15%
Vitamin C
0%
0%
Calcium
20%
20%
Iron
10%
10%
Exchanges:
2 Starch; 0 Fruit; 9 Other Carbohydrate; 0 Skim Milk; 0 Low-Fat Milk; 0 Milk; 0 Vegetable; 0 Very Lean Meat; 0 Lean Meat; 0 High-Fat Meat; 13 Fat;
Carbohydrate Choice
11
*Percent Daily Values are based on a 2,000 calorie diet.

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