Chocolate Sponge Cake with Filling and Glaze
Desserts

Chocolate Sponge Cake with Filling and Glaze

ML
By Marie Lefebvre · Updated September 29, 2026

A light and airy chocolate sponge cake layered with a velvety cocoa cream filling and finished with a glossy rum chocolate glaze. Perfect for birthdays and celebrations.

Prep⏱️ 60 min
Servings👥 12 servings
Difficulty📊 Medium
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🛒 Ingredients

12 servings

12
  • 5 whole eggs
  • 2 cups sugar
  • 1 cup boiling water
  • 1 cup unsweetened cocoa powder
  • 2½ cups all-purpose flour
  • 1 tablespoon baking powder
  • 1 pinch of salt
  • 1 can sweetened condensed milk (14 oz / 397 g)
  • 2 tablespoons cocoa powder (for filling)
  • 2 tablespoons margarine
  • 1 lb (500 g) baking chocolate
  • 1 cup heavy cream (200 g)
  • 2 tablespoons rum

Directions

  1. 1

    Preheat oven to 350°F (180°C). Sift together flour, cocoa powder, baking powder, and salt. Set aside.

  2. 2

    Beat whole eggs with sugar using an electric mixer for 15 minutes until pale, thick, and very fluffy.

  3. 3

    With mixer on low speed, slowly pour in the boiling water, then gently fold in the sifted dry ingredients until just combined.

  4. 4

    Pour batter into a greased pan dusted with cocoa powder. Bake 30 minutes or until a toothpick comes out clean. Unmold while warm and slice horizontally into two layers.

  5. 5

    Make the filling: cook condensed milk, cocoa powder, and margarine over low heat for 8 minutes, stirring constantly, until thickened. Let cool.

  6. 6

    Make the glaze: melt baking chocolate in the microwave in 1-minute intervals, stirring between each. Stir in the heavy cream and rum until smooth and glossy.

  7. 7

    Moisten both cake layers with a light syrup or soda. Spread filling on the bottom layer, place top layer over it, then pour the chocolate glaze all over. Decorate as desired and serve chilled.

💡 Chef's Tip

For an extra-airy sponge, beat the eggs in a bowl set over a warm water bath (104°F / 40°C). Substitute rum with vanilla extract for an alcohol-free version.