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One-Bowl Chocolate Fudge Cake Recipe

4.7 from 145 reviews

This decadent One-Bowl Chocolate Fudge Cake combines rich, dark chocolate with a luscious homemade ganache, offering a moist and fudgy texture that’s easy to achieve with simple ingredients. Perfect for chocolate lovers, it features a streamlined process using a single bowl for batter preparation and an indulgent ganache frosting that can be prepared via microwave or double boiler methods.

Ingredients

Scale

Chocolate Ganache

  • 840 g dark cooking chocolate
  • 125 g unsalted butter
  • 60 g glucose syrup (or corn syrup)
  • 375 g heavy cream (whipping cream)

Chocolate Fudge Cake

  • 200 g dark chocolate
  • 150 g unsalted butter
  • 90 g vegetable oil
  • 7 g vanilla extract
  • 400 g caster sugar
  • 3 large eggs (55g each, room temperature)
  • 45 g unsweetened cocoa powder
  • 250 g all-purpose flour
  • 1 1/2 tsp baking powder
  • 1/4 tsp bicarbonate of soda
  • 1/2 tsp salt
  • 300 g boiling water
  • 10 g instant coffee powder (optional)

Instructions

  1. Prepare Chocolate Ganache – Microwave method: Place dark cooking chocolate, heavy cream, unsalted butter, and glucose syrup into a large microwave-safe bowl. Microwave in 20-second intervals, stirring thoroughly after each, until mixture is completely melted and smooth.
  2. Prepare Chocolate Ganache – Double boiler method: Fill a medium pot one-third with water and bring to a boil. Place a heatproof bowl on top, adjust heat to low, and add all ganache ingredients. Stir gently until fully melted and smooth.
  3. Set Ganache: Cover ganache directly with plastic wrap to prevent skin formation. Let it set at room temperature for about 3-4 hours until firm to the touch but still slightly soft inside.
  4. Soften Ganache for Frosting: Before using, soften ganache by microwaving for 10 seconds and stirring until spreadable, or warm gently over a double boiler until the right consistency is reached.
  5. Preheat Oven and Prepare Cake Tins: Preheat a fan-forced oven to 150°C (300°F) or 170°C (340°F) if no fan. Grease two 20cm (8-inch) cake tins with oil and line the bottoms with baking paper.
  6. Melt Butter and Chocolate: In a heatproof bowl, microwave dark chocolate and butter for 30 seconds intervals, stirring each time until smooth and fully melted.
  7. Add Sugar, Oil, Vanilla, and Eggs: Mix in vegetable oil, vanilla extract, and caster sugar using a spatula until combined. Add eggs and whisk thoroughly until a uniform batter forms.
  8. Sift and Add Dry Ingredients: Sift flour, cocoa powder, baking powder, bicarbonate of soda, and salt over the chocolate mixture. Fold gently with a spatula until no dry streaks remain.
  9. Add Boiling Water and Coffee: Combine boiling water and instant coffee powder in a jug. Stir to dissolve, then add to cake batter and whisk to combine.
  10. Bake the Cake: Divide batter evenly between prepared tins. Bake on the middle oven rack for 40-45 minutes, or until a toothpick inserted in the center comes out clean. Cool in tins for 20 minutes before transferring to wire racks to cool completely.
  11. Assemble Cake Layers: Place one cooled cake layer on a serving plate. Spread one-quarter of the ganache over the surface evenly.
  12. Finish and Decorate: Add the second cake layer on top and cover the entire cake with remaining ganache. Use a piping bag fitted with a Wilton 1M tip to pipe random swirls on top for decoration.

Notes

  • Use high-quality dark chocolate for best flavor in both cake and ganache.
  • Vegetable oil helps keep the cake moist and tender.
  • Instant coffee powder enhances the chocolate depth but is optional.
  • Glucose syrup can be substituted with light corn syrup.
  • Ensure eggs are at room temperature to aid emulsification.
  • Allow cake layers to cool completely before frosting to prevent ganache melting.
  • Microwave times may vary depending on appliance wattage; stir thoroughly to avoid overheating.

Keywords: chocolate fudge cake, one-bowl chocolate cake, chocolate ganache cake, easy chocolate cake, moist chocolate cake, homemade chocolate cake