Diamond Ring Engagement Cake

Featured in: Comfort Baking

This elegant cake presents a stunning centerpiece inspired by diamond engagement rings. Layers of light vanilla sponge are paired with rich white chocolate mousse, all enveloped in a glossy, shimmering glaze that mimics a sparkling jewel. Crafted with careful preparation and chilling, it combines airy textures with creamy indulgence. The addition of edible silver leaf and sugar pearls enhances its festive appearance, making it ideal for memorable celebrations. Ideal for those who appreciate refined desserts with a modern European touch.

Updated on Sat, 29 Nov 2025 11:59:00 GMT
Glazed Diamond Ring Engagement Cake, shimmering with edible glitter, ready for a special celebration. Save
Glazed Diamond Ring Engagement Cake, shimmering with edible glitter, ready for a special celebration. | butterhearth.com

A stunning, show-stopping dessert centerpiece inspired by the elegance of diamond engagement rings. This creative cake features layers of vanilla sponge, rich white chocolate mousse, and a sparkling jewel-like glaze, perfect for celebrations.

This cake has become my go-to dessert for special occasions and never fails to impress guests with its look and flavor.

Ingredients

  • Sponge Cake: 4 large eggs, 120 g granulated sugar, 120 g all-purpose flour, 1/2 tsp vanilla extract, 1/4 tsp salt
  • White Chocolate Mousse: 200 g white chocolate chopped, 300 ml heavy cream divided, 2 sheets gelatin (or 5 g powdered gelatin), 1 tsp vanilla extract
  • Mirror Glaze: 200 g white chocolate chopped, 150 g granulated sugar, 100 ml water, 100 g sweetened condensed milk, 8 g powdered gelatin, Food coloring (silver pearl or pastel tones)
  • Decoration: Edible silver leaf, Edible glitter, Sugar pearls or edible jewels

Instructions

Step 1:
Preheat your oven to 170°C (340°F). Grease and line a large ring-shaped cake pan or a standard cake pan with a small round cutter in the center to create a ring shape.
Step 2:
For the sponge Whisk eggs and sugar in a stand mixer until pale and tripled in volume (about 8 minutes). Gently fold in sifted flour, vanilla, and salt. Pour into the pan and smooth the surface. Bake for 25 30 minutes, or until a toothpick comes out clean. Cool completely.
Step 3:
For the mousse Soften gelatin in cold water for 5 minutes. Melt white chocolate over a bain-marie or in the microwave. Heat 100 ml cream to just simmering, then dissolve the gelatin in it. Pour over melted chocolate, stirring until smooth. Cool to room temperature. Whip remaining cream to soft peaks and fold into the chocolate mixture with vanilla.
Step 4:
Slice the cooled cake horizontally into two layers. Place the bottom layer in a clean ring mold (or springform pan), spread half the mousse, add the top layer, and cover with remaining mousse. Smooth the top and freeze for 2 hours.
Step 5:
For the glaze Soften gelatin in cold water. Combine sugar, water, and condensed milk in a saucepan, bring just to a boil, then remove from heat. Stir in gelatin to dissolve, then pour over white chocolate. Let sit 2 minutes, then blend until smooth. Add food coloring for a jewel-like sheen. Cool glaze to 32°C (90°F).
Step 6:
Remove cake from freezer and unmold onto a wire rack. Pour mirror glaze evenly over the frozen cake, letting excess drip off. Decorate immediately with edible silver leaf, glitter, and sugar pearls to mimic a diamond rings sparkle.
Step 7:
Chill the finished cake in the refrigerator for 1 hour to set. Slice and serve.
This elegant Diamond Ring Engagement Cake features layers of delicious cake with a stunning, glittering glaze. Save
This elegant Diamond Ring Engagement Cake features layers of delicious cake with a stunning, glittering glaze. | butterhearth.com

This recipe brings joy to family celebrations as everyone marvels at the cake’s stunning appearance before enjoying its delicious taste.

Required Tools

Stand mixer or hand mixer, Ring cake pan or springform pan, Mixing bowls, Saucepan, Wire rack, Offset spatula, Thermometer (for glaze)

Allergen Information

Contains eggs, dairy, and gluten (wheat). May contain soy (in some chocolate). Check all decorations for nut and gluten traces if allergies are a concern.

Nutritional Information

Calories 410, Total Fat 23 g, Carbohydrates 47 g, Protein 6 g per serving.

Imagine a slice of this Diamond Ring Engagement Cake, a perfect dessert centerpiece for any celebration with edible jewels. Save
Imagine a slice of this Diamond Ring Engagement Cake, a perfect dessert centerpiece for any celebration with edible jewels. | butterhearth.com

This diamond ring cake is the perfect showstopper for your next celebration creating unforgettable moments.

Recipe Questions

How do I achieve the perfect mousse texture?

Ensure the gelatin is fully dissolved and the whipped cream is folded gently to keep the mousse light and airy.

What is the best way to make the mirror glaze shiny?

Pour the glaze over the cake when it’s cooled to about 32°C (90°F) and the cake is frozen to achieve a smooth, glossy finish.

Can I prepare this cake in advance?

Yes, it benefits from chilling and can be prepared a day ahead to allow flavors to meld and layers to set properly.

What alternatives can I use for gelatin?

Gelatin sheets or powdered gelatin work equally well; ensure proper blooming before adding to warm liquids.

How can I create the ring shape without a specialized mold?

You can use a ring-shaped cake pan or cut the center out of a baked sponge using a round cutter before layering.

Diamond Ring Engagement Cake

Elegant layered cake with vanilla sponge, white chocolate mousse, and jewel-like glaze for celebrations.

Prep duration
40 min
Time to cook
30 min
Complete duration
70 min
Created by Grace Mitchell


Skill Level Hard

Heritage Modern European

Output 10 Portions

Dietary considerations Meat-Free

Components

Sponge Cake

01 4 large eggs
02 2/3 cup granulated sugar
03 1 cup all-purpose flour
04 1/2 teaspoon vanilla extract
05 1/4 teaspoon salt

White Chocolate Mousse

01 7 oz white chocolate, chopped
02 1 1/4 cups heavy cream, divided
03 2 sheets gelatin or 1 teaspoon powdered gelatin
04 1 teaspoon vanilla extract

Mirror Glaze

01 7 oz white chocolate, chopped
02 3/4 cup granulated sugar
03 1/2 cup water
04 7 oz sweetened condensed milk
05 2 1/2 teaspoons powdered gelatin
06 Food coloring (silver, pearl, or pastel tones)

Decoration

01 Edible silver leaf
02 Edible glitter
03 Sugar pearls or edible jewels

Directions

Stage 01

Prepare oven and pan: Preheat oven to 340°F. Grease and line a large ring-shaped cake pan or a standard cake pan with a small round cutter in center to form ring shape.

Stage 02

Make sponge cake batter: Whisk eggs and sugar in a stand mixer until pale and volume triples, about 8 minutes. Gently fold in sifted flour, vanilla extract, and salt until combined. Pour batter into pan and smooth surface.

Stage 03

Bake and cool sponge: Bake for 25 to 30 minutes or until a toothpick inserted in center comes out clean. Remove from oven and cool completely.

Stage 04

Prepare white chocolate mousse: Soften gelatin in cold water for 5 minutes. Melt white chocolate over bain-marie or microwave. Heat 1/2 cup heavy cream to simmer, dissolve gelatin in cream, then stir into melted chocolate until smooth. Let cool to room temperature.

Stage 05

Whip cream and combine: Whip remaining 3/4 cup heavy cream to soft peaks. Fold whipped cream and vanilla extract gently into cooled chocolate mixture until smooth.

Stage 06

Assemble mousse layers: Slice cooled sponge horizontally into two layers. Place bottom layer in ring mold or springform pan. Spread half of mousse evenly on bottom layer. Add top sponge layer and cover with remaining mousse. Smooth top and freeze for 2 hours.

Stage 07

Prepare mirror glaze: Soften gelatin in cold water. In saucepan, combine sugar, water, and sweetened condensed milk; bring just to a boil then remove from heat. Stir in gelatin to dissolve, pour over chopped white chocolate and let sit 2 minutes. Blend until smooth, add desired food coloring, and cool glaze to 90°F.

Stage 08

Glaze and decorate cake: Remove cake from freezer and unmold onto wire rack. Pour mirror glaze evenly over frozen cake, allowing excess to drip off. Immediately decorate with edible silver leaf, glitter, and sugar pearls to mimic diamond sparkle.

Stage 09

Set glaze and serve: Chill glazed cake in refrigerator for 1 hour to set. Slice and serve.

Necessary tools

  • Stand mixer or hand mixer
  • Ring cake pan or springform pan
  • Mixing bowls
  • Saucepan
  • Wire rack
  • Offset spatula
  • Thermometer

Allergy details

Review each component for potential allergens and consider consulting with a healthcare provider if you're unsure about certain ingredients.
  • Contains eggs, dairy, and gluten (wheat)
  • May contain soy (in some chocolate)
  • Check decorations for nut and gluten traces if allergic

Nutritional information (per portion)

These values are estimates only and shouldn't replace professional medical guidance.
  • Energy Value: 410
  • Fats: 23 g
  • Carbohydrates: 47 g
  • Protein Content: 6 g