This easy rainbow sponge cake is a rookie-proof recipe for making a fluffy and colorful cake, that children will especially love. If you have kids, you can ask them to help you prepare this rainbow sponge cake and show them the “magic” of colored concentric circles that basically form by themselves.
To make the easy rainbow sponge cake, you’ll just need to prepare one dough, divide it into four bowls and add a little food coloring in powder or gel form to each bowl; then pour the dough a spoon at a time into the baking pan, alternating different colors, and the optical effect is done! You can serve the rainbow sponge cake as it is, or garnished with whipped cream and some colored sprinkles.
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- DifficultyVery easy
- CostVery cheap
- Preparation time15 Minutes
- Cooking time45 Minutes
- Serving8 servings
- Cooking methodOven
Ingredients for 8 inch rainbow sponge cake
- Power 315,99 (Kcal)
- Carbohydrates 46,74 (g) of which sugars 20,49 (g)
- Proteins 6,69 (g)
- Fat 12,72 (g) of which saturated 1,92 (g)of which unsaturated 10,31 (g)
- Fibers 1,19 (g)
- Sodium 28,38 (mg)
Indicative values for a portion of 78 g processed in an automated way starting from the nutritional information available on the CREA* and FoodData Central** databases. It is not food and / or nutritional advice.
* CREATES Food and Nutrition Research Center: https://www.crea.gov.it/alimenti-e-nutrizione https://www.alimentinutrizione.it ** U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, 2019. https://fdc.nal.usda.gov
How to make easy rainbow sponge cake
Mix the dough with a whisk for a couple of minutes, until the flour is perfectly incorporated. At the end you will have a fluid and homogeneous mixture, but not too liquid.
Leave one part of the dough in neutral color, while in each of the other three bowls put a hint of red, blue and green food coloring. Initially use a little dye and mix, so you will realize if you need more. To prepare the rainbow sponge cake, use food coloring in powder or gel form and avoid liquid ones that would make the dough too liquid.
Without tilting the pan (or you will ruin this effect), bake the rainbow sponge cake in the preheated oven at 356° F (180° C) for about 40 minutes.
Otherwise, if the cake inside is still too moist, continue baking for 5-10 minutes. Serve the rainbow sponge cake as it is, or garnish it with a little icing sugar or whipped cream.
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How to store the rainbow cake
You can keep the rainbow sponge cake in a cake container at room temperature. It remains soft for 3 to 4 days.
Tips and variation
You can prepare the easy rainbow sponge cake using the colors you prefer. However, consider that the base of the dough is yellow, so too soft colors are difficult to obtain.
If you want to cover the harlequin cake with whipped cream, you’ll need 1/2 cup of heavy cream. Whip it with electric whisk together with 2 tablespoons of sugar. You can then garnish the cake with colored sprinkles.
Dairy-free and gluten free rainbow cake
This rainbow cake recipe is dairy-free and lactose-free. For a gluten-free rainbow sponge cake simply replace the all purpose flour with an equal amount of rice flour.