Diamond Ring Dessert Cake

Featured in: Afterglow Suppers

This elegant dessert showcases moist vanilla sponge layered with smooth white chocolate mousse, topped with a glossy mirror glaze that mimics sparkling jewels. The cake is shaped like a ring, enhanced with edible silver leaf and sugar pearls for a dazzling finish. Ideal for festive occasions, it requires chilling to set the mousse and glaze perfectly. Soft textures and rich flavors combine for a show-stopping centerpiece.

Updated on Sat, 29 Nov 2025 12:21:00 GMT
Diamond Ring Engagement Cake shimmering with edible glitter and sugar pearls, ready to serve. Save It
Diamond Ring Engagement Cake shimmering with edible glitter and sugar pearls, ready to serve. | sunnyspoonful.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 became the highlight of our celebration and amazed every guest with its unique ring shape and jewel-like finish.

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.
Make 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.
Prepare 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 Layers:
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.
Make 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.
A decadent Diamond Ring Engagement Cake, layered with mousse and a glistening mirror glaze. Save It
A decadent Diamond Ring Engagement Cake, layered with mousse and a glistening mirror glaze. | sunnyspoonful.com

This dessert always brings the family together to marvel at its beauty before digging in.

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 elegant Diamond Ring Engagement Cake is a stunning centerpiece perfect for celebrating engagements. Save It
This elegant Diamond Ring Engagement Cake is a stunning centerpiece perfect for celebrating engagements. | sunnyspoonful.com

This dessert will be the sparkling centerpiece of your celebration and a delicious treat to remember.

Recipe FAQs

How do I achieve the ring shape?

Use a ring cake pan or a springform pan with a smaller round cutter at the center to create the signature hollow circle.

What’s the best way to get a smooth mousse texture?

Whip cream to soft peaks before folding gently into the melted chocolate mixture, ensuring a light and airy mousse.

How should the mirror glaze be poured?

Chill the cake thoroughly, then pour the glaze evenly over the frozen surface, allowing excess to drip off for a flawless finish.

Can this dessert be prepared in advance?

Yes, it can be made ahead, kept chilled, and glazed just before serving for best results.

What decorations best enhance the jewel-like appearance?

Edible silver leaf, glitter, and sugar pearls add sparkle and mimic diamond reflections beautifully.

Diamond Ring Dessert Cake

Elegant dessert with layers of vanilla sponge, white chocolate mousse, and shimmering glaze.

Prep Time
40 mins
Cook Time
30 mins
Total Duration
70 mins
Authored by Lana Bright

Recipe Type Afterglow Suppers

Skill Level Hard

Cuisine Style Modern European

Recipe Yield 10 Serving Size

Diet Preferences Vegetarian-Friendly

What You'll Need

Sponge Cake

01 4 large eggs
02 0.6 cup granulated sugar
03 0.96 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 3.5 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

Step 01

Prepare Oven and Pan: Preheat oven to 340°F (170°C). Grease and line a ring-shaped cake pan or use a standard cake pan with a small round cutter in the center to form a ring.

Step 02

Make Sponge Cake: Whisk eggs and sugar in a stand mixer until pale and tripled in volume, about 8 minutes. Gently fold in sifted flour, vanilla extract, and salt. Pour batter into the prepared pan and smooth the surface. Bake for 25–30 minutes or until a toothpick inserted comes out clean. Allow to 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 just simmering and dissolve the gelatin in it. Pour gelatin cream mixture into melted chocolate, stirring until smooth. Cool to room temperature. Whip remaining cream to soft peaks and fold gently into the chocolate mixture with vanilla extract.

Step 04

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

Step 05

Prepare Mirror Glaze: Soften gelatin in cold water. In a saucepan, combine sugar, water, and condensed milk; bring just to a boil then remove from heat. Stir in gelatin until dissolved. Pour hot mixture over white chocolate and let sit for 2 minutes. Blend until smooth, then add desired food coloring. Cool glaze to 90°F (32°C).

Step 06

Glaze Cake: Remove cake from freezer and unmold onto a wire rack. Pour mirror glaze evenly over the frozen cake allowing excess to drip off. Decorate immediately with edible silver leaf, glitter, and sugar pearls to emulate diamond sparkle.

Step 07

Chill and Serve: Refrigerate the finished cake for 1 hour to set the glaze. Slice and serve as desired.

Tools You'll Need

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

Allergy Information

Review each ingredient to identify potential allergens, and consult a healthcare professional if you're unsure.
  • Contains eggs, dairy, and gluten (wheat)
  • May contain soy in chocolate
  • Check decorations for possible nut and gluten traces

Nutrition Details (Per Serving)

This nutritional data is for reference only and isn't a substitute for medical advice.
  • Caloric Value: 410
  • Fats: 23 grams
  • Carbohydrates: 47 grams
  • Proteins: 6 grams