How to Bake a Rich Chocolate Cake
This is the chocolate cake. Deeply moist, intensely chocolate, with a crumb so tender it practically melts. Topped with a thick, fudgy chocolate frosting. It's the cake you bake for someone's birthday when you want them to know you care. One bowl, no mixer required.
Total time: 1h 15 min · Servings: 8–10 slices (two 20cm layers)
Ingredients
- 250g plain flour
- 250g sugar
- 75g cocoa powder (Dutch-process preferred)
- 2 tsp baking soda
- 1 tsp baking powder
- 1 tsp salt
- 2 large eggs
- 240ml buttermilk
- 240ml hot coffee (or hot water — coffee amplifies chocolate flavour without tasting like coffee)
- 120ml vegetable oil
- 2 tsp vanilla extract
- For the frosting: 225g butter (softened)
- For the frosting: 400g icing sugar
- For the frosting: 100g cocoa powder
- For the frosting: 80ml milk or cream
- For the frosting: 2 tsp vanilla extract
- For the frosting: pinch of salt
Instructions
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Mix dry ingredients: Preheat oven to 175°C/350°F. Grease and line two 20cm round cake tins. In a large bowl, whisk flour, sugar, cocoa powder, baking soda, baking powder, and salt.
Tip: Sifting the cocoa prevents lumps, but vigorous whisking works too. -
Add wet ingredients: Add eggs, buttermilk, oil, and vanilla. Mix until just combined. The batter will be thick.
Tip: Don't overmix — just until you can't see dry ingredients. -
Add hot coffee: Pour in the hot coffee and stir until combined. The batter will be VERY thin and liquid — this is correct. Don't panic.
Tip: Hot coffee intensifies the chocolate flavour without the cake tasting like coffee at all. It's the secret weapon. -
Bake: Divide batter evenly between the two prepared tins. Bake for 30–35 minutes until a skewer comes out clean.
Tip: The thin batter makes an incredibly moist cake. Check at 30 minutes — overbaking dries it out. -
Cool completely: Cool in tins for 10 minutes, then turn out onto wire racks. Cool COMPLETELY before frosting (at least 1 hour). Warm cake melts frosting.
Tip: If you're in a rush, put the layers in the fridge for 20 minutes to speed up cooling. -
Make the frosting: Beat softened butter for 2 minutes until pale and fluffy. Add icing sugar and cocoa in three additions, alternating with milk. Add vanilla and salt. Beat until thick, smooth, and spreadable.
Tip: If the frosting is too thick, add milk 1 tablespoon at a time. If too thin, add more icing sugar. -
Assemble: Place one layer on a plate. Spread a thick layer of frosting on top. Place the second layer on top. Frost the top and sides generously.
Tip: For clean edges, do a thin 'crumb coat' first (a thin layer that traps crumbs), chill for 15 minutes, then apply the final thick layer.
Pro Tips
- Hot coffee is the single biggest secret in chocolate cake baking. It deepens the chocolate flavour dramatically. If you don't drink coffee, use hot water — it still works.
- Oil instead of butter makes a moister cake that stays soft for days. Butter tastes better in some cakes, but oil keeps chocolate cake incredibly moist.
- This cake improves with time. Frosted and stored at room temperature, it's even better on day 2 as the flavours deepen and the crumb softens further.
Frequently Asked Questions
Will the cake taste like coffee?
No. Hot coffee intensifies the chocolate flavour without contributing any coffee taste. Even people who dislike coffee can't detect it. It's a standard professional baker technique.
Why is my chocolate cake dry?
Almost always overbaking. Check at 30 minutes with a skewer. Also ensure you're using the full amount of oil — reducing fat is the quickest way to dry out a cake.
Can I make this as cupcakes?
Yes. Fill cupcake liners 2/3 full and bake at 175°C for 18–22 minutes. Makes about 24 cupcakes.
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