Keto Cloud Cake

Intensity key: Low = subtle, Medium = noticeable, High = bold. This cake is designed to be delicately sweet – perfect for pairing with berries or keto whipped cream.

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Ingredients

For the cake base

• 8 large eggs (room temperature, separated)

• 8 oz (226 g) full-fat cream cheese (softened)

• ½ cup (120 ml) unsalted butter (softened)

• ⅓ cup (65 g) powdered erythritol or allulose (plus extra for dusting)

• 1 tsp vanilla extract

• ¼ tsp cream of tartar (stabilizes egg whites)

• ¼ tsp salt

Optional flavor variations

• 1 tbsp lemon zest (for citrus cloud)

• 1 tsp almond extract (for nutty undertones)

• 2 tbsp unsweetened cocoa powder (for chocolate cloud)

For serving (not included in nutrition)

• Fresh berries (raspberries or blackberries)

• Sugar-free whipped cream

• Dusting of powdered sweetener

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Equipment Needed

• 2 large mixing bowls

• Electric hand mixer or stand mixer with whisk attachment

• 8-inch (20 cm) round springform pan (or lined cake pan)

• Rubber spatula

• Parchment paper

• Cooling rack

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Instructions

1. Preheat & prepare the pan

Preheat your oven to 325°F (160°C). Line the bottom of your springform pan with parchment paper – do not grease the sides. The cake needs to cling to the ungreased sides to rise properly. Set aside.

2. Separate the eggs

Carefully separate the egg whites from the yolks. Place whites in one large bowl, yolks in another. Ensure no yolk gets into the whites – even a drop will prevent them from whipping into stiff peaks. Let both come to room temperature (about 20 minutes) if they were refrigerated.

3. Make the cream cheese base

In the bowl with egg yolks, add the softened cream cheese, softened butter, vanilla extract, salt, and half of the sweetener (about 2½ tbsp / 32 g). Beat with the electric mixer on medium speed until completely smooth, pale, and slightly thickened – about 2 minutes. Scrape down the sides as needed. The mixture should be lump-free and glossy.

Pro tip: If using cocoa powder or lemon zest, add it now and mix until incorporated.

4. Whip the egg whites

In the clean, dry bowl with egg whites, add the cream of tartar. Begin whipping on low speed until foamy, then gradually increase to medium-high. Once soft peaks form (they curl over when you lift the beater), slowly add the remaining sweetener (about 2½ tbsp / 32 g) while continuing to whip. Whip until stiff, glossy peaks form – the whites should stand straight up and not slide when the bowl is tilted. Do not over-whip or they’ll become dry and grainy.

5. Fold the mixtures together

Take one-third of the whipped egg whites and vigorously stir them into the cream cheese-yolk mixture. This “sacrificial” fold lightens the dense base. Then gently fold in the remaining egg whites: use a rubber spatula to cut down through the center, scrape along the bottom, and bring the mixture up and over the top. Rotate the bowl and repeat. Fold just until no white streaks remain – over-folding deflates the air and ruins the cloud texture. The batter should be voluminous and billowy.

6. Bake the cake

Gently pour or spoon the batter into the prepared pan. Smooth the top with the spatula – do not press down. Place the pan on the middle oven rack. Bake for 40–45 minutes, or until the top is deep golden brown, the cake feels springy to the touch, and a toothpick inserted into the center comes out clean or with a few moist crumbs.

Baking time may vary – start checking at 35 minutes. The cake will rise dramatically, then deflate slightly as it cools (this is normal).

7. Cool slowly – the most important step!

Turn off the oven, crack the door open about 4–6 inches, and let the cake cool inside for 20 minutes. This gradual cooling prevents sudden collapse. Then remove the cake from the oven and place on a cooling rack. Run a thin knife around the inside edge of the pan to release any stuck spots, then unclasp the springform. Allow the cake to cool completely (about 1 hour) before slicing. Do not refrigerate while warm – that will make it dense.

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The Last of the Recipe – Tips, Storage & Serving

How to achieve the perfect “cloud” texture

• Room temperature ingredients are non-negotiable. Cold cream cheese or butter will create lumps, and cold egg whites won’t whip to full volume.

• Do not grease the pan sides. The batter needs friction to climb. Greased sides = short, dense cake.

• Fold gently, not vigorously. Every stroke should be slow and deliberate. You want to keep those tiny air bubbles intact.

• Under-bake slightly rather than over-bake. A dry cloud cake is a sad cloud cake. The toothpick should have moist crumbs attached.

Storage instructions

• Counter: Store in an airtight container at room temperature for up to 2 days. The texture stays soft and airy.

• Refrigerator: Wrap tightly and refrigerate for up to 5 days. Cold cake firms up – let slices sit at room temp for 20 minutes before eating.

• Freezer: Slice the cooled cake, wrap each piece in plastic wrap, then foil. Freeze for up to 2 months. Thaw overnight in the fridge.

Serving suggestions

This cloud cake is intentionally not very sweet – it’s a canvas. Try:

• A drizzle of warm sugar-free caramel sauce

• Toasted coconut flakes and a dollop of keto vanilla custard

• Mashed fresh raspberries swirled into the batter before baking

• A dusting of cinnamon and powdered monk fruit

Troubleshooting quick guide

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Nutrition Information (per slice – 8 slices)

Calculated using powdered erythritol, full-fat cream cheese, unsalted butter, large eggs. Does not include optional toppings.