Description

A spectacular, show-stopping dessert featuring three layers of creamy ice cream on a tender almond flour sponge, all encased in a fluffy, toasted Swiss meringue. This stunning centerpiece requires some patience during the freezing steps but delivers an incredible contrast of temperatures and textures in every slice.

Ingredients

Scale

For the Ice Cream Core

2 2/3 cups keto-friendly vanilla ice cream, softened slightly (about 380g)
2 cups keto-friendly strawberry ice cream, softened slightly (about 280g)
2 cups keto-friendly chocolate ice cream, softened slightly (about 280g)

For the Sponge Base

1/2 cup unsalted butter, softened at room temperature (113g)
1/2 cup full-fat sour cream, room temperature (120g)
3 large eggs, room temperature (150g)
1/4 cup unsweetened almond milk (60ml)
1 teaspoon pure vanilla extract (5ml)
1 1/3 cups fine blanched almond flour (130g)
1/3 cup coconut flour (40g)
1/3 cup granulated erythritol sweetener (65g)
1 teaspoon baking powder (4g)
1/2 teaspoon kosher salt (3g)

For the Swiss Meringue

4 large egg whites (120g)
1 cup granulated erythritol sweetener (200g)
1 teaspoon cream of tartar (3g)
1 teaspoon fresh lemon juice (5ml)

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Instructions

Prepare the ice cream dome: Line a 10-inch mixing bowl completely with plastic wrap, leaving plenty of overhang. Scoop the softened vanilla ice cream into the bottom of the bowl, using a spatula to press it into an even, flat layer. Place in the freezer for about 1 hour, or until firm.
Layer the remaining flavors: Once the vanilla layer is solid, spread the strawberry ice cream over it in an even layer. Freeze for another 1 hour. Repeat this process with the chocolate ice cream, smoothing the top so it is completely flat. Freeze the fully assembled dome for at least 1 more hour.
Mix the wet ingredients: Preheat the oven to 350°F. In a large mixing bowl, beat the softened butter, sour cream, eggs, almond milk, and vanilla extract together on low speed for about 2 minutes until light and well combined.
Add the dry ingredients: In a separate bowl, whisk together the almond flour, coconut flour, erythritol, baking powder, and kosher salt, breaking up any clumps. Gradually add this dry mixture to the wet ingredients, beating until a thick, slightly sticky batter forms.
Bake the sponge base: Grease a 10-inch springform pan and line the bottom with parchment paper. Spread the batter evenly into the pan. Bake for 45 to 50 minutes, until the top is golden and a toothpick inserted into the center comes out clean. If the edges brown too quickly, tent loosely with aluminum foil.
Cool and chill the cake: Let the cake cool completely in the pan. Once at room temperature, transfer the cake to the freezer for 15 to 20 minutes. A chilled base prevents the ice cream from melting during assembly.
Prepare the meringue base: Set a heatproof bowl over a pot of gently simmering water, ensuring the bottom of the bowl does not touch the water. Add the egg whites, erythritol, and cream of tartar. Whisk constantly for 3 to 5 minutes, until the sweetener is completely dissolved and the mixture is warm to the touch.
Whip to stiff peaks: Remove the bowl from the heat. Using a hand mixer or stand mixer, start beating on low speed and gradually increase to high. Beat for 8 to 10 minutes, until thick, glossy, stiff peaks form. Beat in the lemon juice during the final 30 seconds.
Assemble the cake: Remove the chilled cake base from the pan and place it on a freezer-safe serving platter. Remove the ice cream dome from the freezer, invert it directly onto the center of the cake, and peel away the plastic wrap.
Coat and toast: Working quickly, use a spatula to spread the meringue over the entire cake and ice cream dome, ensuring it touches the platter at the base to completely seal the ice cream inside. Use the back of a spoon to create decorative swirls. Place back in the freezer for 15 minutes to set. Just before serving, use a kitchen torch to brown the meringue peaks to your liking. Serve immediately.

Notes

Why It Works

Adding vanilla extract and a pinch of salt to the sponge base dramatically improves the flavor profile, balancing the cooling effect typical of erythritol.
Chilling the baked cake before assembly provides a cold foundation, drastically reducing the chance of the ice cream melting as you build the layers.
The Swiss meringue method (heating the whites and sweetener over a water bath) ensures the erythritol fully dissolves, preventing a gritty or weeping meringue.

Common Pitfalls to Avoid

Melting Ice Cream: You must work quickly during the final assembly. Have your meringue whipped and ready to go before you pull the ice cream dome out of the freezer.
Incomplete Sealing: When applying the meringue, make sure it completely covers the ice cream and touches the cake base/platter. Any gaps will allow the ice cream to leak out as it softens.
Overbaking the Base: Keto flours can dry out quickly. Check the cake at the 45-minute mark to ensure a tender crumb.

Variations

Swap the ice cream flavors for a custom profile; a combination of keto coffee, butter pecan, and chocolate makes an excellent mocha-nut variation.
If you do not own a kitchen torch, you can bake the fully assembled and meringue-coated cake at 500°F for 2 to 3 minutes until just browned, but you must monitor it constantly to prevent melting.

Allergy Alert

This recipe contains tree nuts (almonds, coconut), eggs, and dairy. For a dairy-free adaptation, you must substitute the butter, sour cream, and ice creams with appropriate plant-based, keto-friendly alternatives.

Nutrition (per serving — estimates)

Calories: 310 | Total Carbs: 22g (Fiber: 6g, Sugar: 3g) | Net Carbs: 5g | Fat: 27g (Saturated: 13g) | Protein: 9g

Nutritional values are approximate, based on standard reference data (USDA FoodData Central). Actual values vary by brand and exact measurements. For precision, use a tracker like MyFitnessPal or Cronometer.

Nutrition

Serving Size: 1 slice
Calories: 310
Sugar: 3g
Fat: 27g
Saturated Fat: 13g
Carbohydrates: 22g
Fiber: 6g
Protein: 9g