Rainbow Cake

My six layer rainbow cake is as fun to eat as it is to look at! It’s easy to make using pantry-staple ingredients and decorated with vanilla frosting.

Course Dessert

Cuisine American

Prep Time 10

Cook Time 30

Total Time 40

Servings servings

Calories 423kcal

Author Arman Liew

Ingredients

4 1/2 cups all-purpose flour
1/2 teaspoon salt
3 cups sugar
1 tablespoon baking soda
1 tablespoon + 1 teaspoon vinegar
1 cup vegetable oil any neutral flavored oil
1 tablespoon vanilla extract
3 cups water
1 tablespoon food gel coloring * See notes
4 cups vanilla frosting to decorate

Instructions

Preheat the oven to 180C/350F. Grease and line six 8-inch cake pans and set aside.
In a large mixing bowl, combine the flour, sugar, salt, and baking soda and mix well. Add the vinegar, oil, vanilla extract, and water, and mix until smooth.
Distribute the batter into six small mixing bowls. Each bowl should have 6 to 7 ounces of cake batter (180-200 grams). Add 3-4 drops of each color of food coloring into them, leaving you with six cake batters of different colors.
Depending on the size of your oven, you may need to bake the cakes in two batches.
Distribute the cake batter into the greased and lined baking pans. Bake the cakes for 25-30 minutes or until a skewer comes out clean.
Remove the cakes from the oven and let them cool in the pan for 10 minutes before carefully transferring them to a wire rack to cool completely.
Once cool, assemble the cakes. Place a single cake on a flat surface and spread a thin layer of vanilla frosting on top. Add the second layer and repeat the process. Repeat this until all six cakes are layered. With the remaining frosting, spread the exterior of the cake until completely frosted. If desired, add some sprinkles or cake decorations on top. Let the cake sit for 30 minutes before slicing and serving.

Video

Notes

Food gel coloring: I use green, blue, purple, yellow, red, and orange.

Leftovers: Keep at room temp, covered, for 5 days, or in the fridge for one week. You can also freeze slices for 6 months.

Nutrition