Some dessert recipes demand to be saved the moment you read them. The 7 + 7 + 7 Cake is one of those timeless treats—its memorable name instantly signals a straightforward preparation process with easily remembered ingredient ratios.
The result is an exceptionally soft, creamy, and delicate cake that pairs perfectly with afternoon coffee, weekend family gatherings, or holiday dessert spreads. Once you taste it, this irresistible dessert will quickly earn a permanent spot in your recipe collection.
Why You Will Love This Recipe
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Easy-to-Remember Ratios: Designed around simple “7-tablespoon” proportions for stress-free measuring.
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Ultra-Creamy Texture: Combines a light sponge soaked in aromatic milk with a rich custard and whipped topping.
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Crowd-Pleasing Flavor: A classic balance of vanilla cream, soft sponge, and chocolate shavings that everyone enjoys.
Ingredients
Sponge Base
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Egg Whites: 7 large
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Sugar: 7 tablespoons
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All-Purpose or Semi-Coarse Flour: 7 tablespoons
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Lukewarm Water: 3 tablespoons
Milk Soak
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Milk: 1 dl (approx. ⅓ cup / 100 ml)
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Rum: A splash (to taste)
Vanilla Custard Cream
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Egg Yolks: 7 large
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Sugar: 7 tablespoons
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All-Purpose Flour: 6 tablespoons
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Cornstarch (Gustin): 1 tablespoon
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Milk: 8 dl (approx. 3⅓ cups / 800 ml)
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Margarine or Butter: 250 g (at room temperature)
Topping & Garnish
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Whipped Cream Powder / Heavy Cream: 1 packet (prepared according to package directions)
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Chocolate: 50 g (finely chopped)
Step-by-Step Instructions
1. Prepare and Bake the Sponge Base
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Preheat your oven to 320°F (160°C). Lightly grease a baking dish with oil.
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In a large bowl, beat the 7 egg whites until stiff peaks form. Gradually add the sugar, flour, and lukewarm water, mixing gently until smooth.
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Spread the batter evenly into the prepared baking dish.
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Bake at 320°F (160°C) for approximately 25 minutes or until golden brown.
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Remove from the oven and allow the sponge to cool completely.
2. Soak the Sponge
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Stir together 1 dl of milk and a splash of rum.
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Once the sponge is completely cool, poke holes across the surface using a toothpick.
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Evenly pour the milk and rum mixture over the cake to soak.
3. Cook the Custard Cream
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In a mixing bowl, combine the 7 egg yolks, sugar, 6 tablespoons of flour, cornstarch, and 1 dl of milk. Whisk until thoroughly smooth.
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Bring the remaining 7 dl of milk to a boil in a saucepan.
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Pour the yolk mixture into the hot milk and cook over medium heat for 5 minutes, stirring continuously until thick.
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Remove from heat and allow the custard to cool completely.
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Once chilled, add the room-temperature margarine (or butter) and beat thoroughly until smooth and fluffy.
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Spread the finished cream evenly over the soaked sponge.
4. Assemble and Garnish
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Prepare the whipped cream according to the package instructions.
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Spread the whipped cream smoothly over the custard layer.
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Finely chop the chocolate and sprinkle it across the top of the cake.
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Chill in the refrigerator before slicing.
Preparation Breakdown
| Phase | Duration |
| Prep Time | 20 minutes |
| Bake Time | 25 minutes |
| Cooling & Chilling | 2 to 3 hours |
| Total Time | ~3 hours 45 minutes |
Frequently Asked Questions
Why is it called the 7 + 7 + 7 Cake?
The name reflects the core measurements used throughout the recipe—7 egg whites, 7 egg yolks, 7 tablespoons of sugar, and 7 tablespoons of flour for the sponge—making it effortless to memorize.
Can I substitute rum in the soak?
Yes. If you prefer a non-alcoholic dessert, you can substitute the rum with rum extract, vanilla extract, or simply use plain flavored milk.
How long does this cake last?
Keep the cake covered in the refrigerator. It stays fresh, moist, and delicious for up to 4 days.
Conclusion
This 7 + 7 + 7 Cake is proof that traditional layered desserts do not have to be complicated to taste extraordinary. With its moist sponge, silky custard, and fluffy topping, it is a guaranteed success from the very first bite!