Diamond Ring Engagement Cake

Featured in: Sweet Heat Treats

This elegant cake showcases layers of light vanilla sponge combined with smooth white chocolate mousse. A glossy mirror glaze with a jewel-like sheen covers the cake, topped with edible silver leaf and sparkling decorations that catch the eye. Chilled to perfection, it offers a luxurious treat ideal for special moments. Preparation involves baking the sponge, preparing the mousse with gelatin, assembling, glazing with colored mirror glaze, and finishing with dazzling edible accents. The result is a show-stopping centerpiece celebrating refined flavors and artistry.

Updated on Sat, 29 Nov 2025 16:11:00 GMT
Diamond Ring Engagement Cake glistens with edible glitter, ready to celebrate a special moment. Save
Diamond Ring Engagement Cake glistens with edible glitter, ready to celebrate a special moment. | fireandbites.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.

I loved preparing this cake for a special occasion, as the jewel-like glaze truly impressed everyone at the party.

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 beautiful Diamond Ring Engagement Cake offers elegant flavors with layers and a mirror glaze. Save
This beautiful Diamond Ring Engagement Cake offers elegant flavors with layers and a mirror glaze. | fireandbites.com

This dessert has become a treasured centerpiece for family celebrations, creating unforgettable moments around the table.

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)

The decadent Diamond Ring Engagement Cake is a stunning visual with white chocolate and edible jewels. Save
The decadent Diamond Ring Engagement Cake is a stunning visual with white chocolate and edible jewels. | fireandbites.com

Enjoy crafting this elegant dessert that dazzles both on the table and as a delightful treat.

Common Questions

How do you achieve a smooth white chocolate mousse?

Gently melt white chocolate and combine it with gelatin dissolved in warm cream. Fold in softly whipped cream with vanilla to create a light, airy texture.

What tips ensure the mirror glaze has a jewel-like shine?

Use gelatin to set the glaze and add delicate food coloring. Pour the glaze over a frozen cake to get a smooth, reflective surface.

Can I make the cake vegan-friendly?

This dessert uses eggs, dairy, and gelatin, but plant-based substitutes like agar and aquafaba could be experimented with to create a vegan version.

What is the best way to create the ring shape?

Bake the sponge in a ring-shaped pan or cut out the center using a round cutter before layering the mousse.

How long should the cake chill before glazing?

Freeze the assembled cake for about 2 hours before pouring the mirror glaze to ensure a smooth finish.

What decorations enhance the diamond ring look?

Use edible silver leaf, edible glitter, and sugar pearls or jewels to mimic sparkling facets and brilliance.

Diamond Ring Engagement Cake

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

Setup Duration
40 min
Time at Heat
30 min
Complete Duration
70 min
Created by Logan Hayes

Recipe Type Sweet Heat Treats

Skill Level Hard

Cultural Background Modern European

Output 10 Portion Count

Special Diet Info Meat-Free

What You'll 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 7 tablespoons water
04 3/8 cup 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

Method Steps

Phase 01

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

Phase 02

Make sponge cake batter and bake: 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 prepared pan and smooth the surface. Bake 25–30 minutes or until a toothpick comes out clean. Cool completely.

Phase 03

Prepare white chocolate mousse: Soften gelatin in cold water for 5 minutes. Melt white chocolate over a double boiler or microwave. Heat 1/2 cup cream until simmering and dissolve gelatin in it. Stir this mixture into melted chocolate until smooth; cool to room temperature. Whip remaining cream to soft peaks and fold into chocolate mixture along with vanilla extract.

Phase 04

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

Phase 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 mixture over white chocolate and let sit 2 minutes, then blend until smooth. Add desired food coloring to create a jewel-like sheen. Cool glaze to about 90°F before use.

Phase 06

Glaze and decorate: Remove frozen cake from mold onto a wire rack. Pour mirror glaze evenly over the cake, allowing excess to drip off. Quickly decorate with edible silver leaf, glitter, and sugar pearls to mimic the sparkle of diamond rings.

Phase 07

Chill and serve: Refrigerate glazed cake for 1 hour to set. Slice and serve.

Kitchen Tools Needed

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

Allergy Details

Always review ingredients individually for potential allergens and seek professional medical guidance if uncertain.
  • Contains eggs, dairy, and gluten (wheat)
  • May contain soy in some chocolates
  • Check decorations for nut and gluten traces if concerned

Dietary Information (Single Portion)

Values shown are estimates only - please consult healthcare providers for specific dietary advice.
  • Energy Content: 410
  • Fats: 23 g
  • Carbohydrates: 47 g
  • Proteins: 6 g