Diamond Ring Engagement Cake

Featured in: Weekend Sweet Moments

This elegant cake combines light vanilla sponge with creamy white chocolate mousse, all encased in a shimmering mirror glaze that mimics jewels. The unique ring shape makes it perfect for festive occasions. Layers are chilled to set, then topped with edible silver leaf and sugar pearls for sparkle. The balance of textures and refined flavors delivers a memorable centerpiece that's as beautiful as it is delicious.

Updated on Sat, 29 Nov 2025 12:08:00 GMT
Diamond Ring Engagement Board: The shimmering white chocolate glaze reflects light over this elegant dessert. Save
Diamond Ring Engagement Board: The shimmering white chocolate glaze reflects light over this elegant dessert. | coraloven.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 was a standout at our last celebration, impressing everyone with its elegant look and delicious layers.

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

Preheat Oven:
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.
Prepare 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.
Make 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.
Assemble Cake:
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.
Prepare 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).
Glaze Cake:
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.
Chill and Serve:
Chill the finished cake in the refrigerator for 1 hour to set. Slice and serve.
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This cake always brings the family together at celebrations and is our go-to special occasion dessert.

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

This gorgeous Diamond Ring Engagement Board features edible glitter, creating a celebratory dessert centerpiece. Save
This gorgeous Diamond Ring Engagement Board features edible glitter, creating a celebratory dessert centerpiece. | coraloven.com

This elegant cake is truly a showstopper, perfect for marking special moments with style and flavor.

Recipe FAQs

How is the ring shape achieved?

Use a ring cake pan or create a ring by baking sponge in a pan with a small round cutter placed inside.

How do you make the mirror glaze shiny?

The glaze is made with gelatin, white chocolate, and sweetened condensed milk, blended smoothly and cooled before pouring to ensure a glossy finish.

Can I add flavors to the layers?

Yes, adding raspberry or passion fruit jam between sponge and mousse layers enhances flavor and offers a fruity contrast.

What decoration elements create the diamond effect?

Edible silver leaf, glitter, and sugar pearls or edible jewels provide the sparkle and jewel-like appearance.

How long should the cake be chilled?

Freeze the filled cake for 2 hours before glazing, then chill for another hour after glazing to set perfectly.

Is this suitable for vegetarians?

Yes, the use of gelatin or vegetarian alternatives ensures suitability for a vegetarian diet.

Diamond Ring Engagement Cake

Show-stopping cake with layers of vanilla sponge, white chocolate mousse, and a jewel-like glaze.

Prep time
40 minutes
Time to cook
30 minutes
Time Required
70 minutes
Created by Hannah Lewis


Skill level Hard

Cuisine Modern European

Makes 10 Portions

Dietary details Meatless

What You Need

Sponge Cake

01 4 large eggs
02 1/2 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

How To Make

Step 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 the center to form a ring shape.

Step 02

Bake Sponge Cake: Whisk eggs and sugar with a mixer until pale and tripled in volume, about 8 minutes. Fold in sifted flour, vanilla extract, and salt gently. Pour batter into the pan, smooth surface, and bake 25–30 minutes until a toothpick inserted comes out clean. Cool completely.

Step 03

Prepare White Chocolate Mousse: Soften gelatin in cold water for 5 minutes. Melt white chocolate over a bain-marie or microwave. Heat 1/2 cup cream until simmering and dissolve gelatin in it. Stir mixture into melted chocolate until smooth, then cool to room temperature. Whip remaining cream to soft peaks, fold into chocolate mixture with vanilla extract.

Step 04

Assemble Cake Layers: Slice cooled sponge horizontally into two layers. Place bottom layer in a ring mold, spread half the mousse evenly, add top layer, cover with remaining mousse. Smooth top and freeze for 2 hours.

Step 05

Prepare Mirror Glaze: Soften gelatin in cold water. Combine sugar, water, and sweetened condensed milk in a saucepan, bring to a boil, then remove from heat. Stir in gelatin until dissolved. Pour over white chocolate and let sit 2 minutes, then blend until smooth. Add food coloring for a jewel-like effect. Cool glaze to 90°F.

Step 06

Glaze and Decorate: Remove cake from freezer and unmold onto a 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 create a sparkling effect.

Step 07

Final Chill and Serve: Chill glazed cake in refrigerator for 1 hour to set. Slice and serve.

Needed utensils

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

Allergy details

Check components for allergens, and get advice from a medical expert if you're unsure.
  • Contains eggs, dairy, and gluten (wheat). May contain soy in chocolate. Check decorations for nut and gluten traces if allergic.

Nutrition Details (each serving)

Details are for informational purposes, not medical use.
  • Kilocalories: 410
  • Fat content: 23 g
  • Carbohydrates: 47 g
  • Proteins: 6 g