Nigella Chocolate Birthday Cake with Condensed Milk is a chocolate sponge cake where condensed milk replaces part of the sugar and liquid in the batter. This gives the cake a dense yet soft texture and a rich, caramel-like sweetness. Often layered or topped with chocolate icing, it’s designed to be celebratory—easy to slice, crowd-pleasing, and reliably moist.
200 g plain flour
50 g cocoa powder
1½ tsp baking powder
½ tsp bicarbonate of soda
100 g caster sugar
1 can (397 g) sweetened condensed milk
2 large eggs
150 ml vegetable oil
150 ml hot water or hot coffee
1 tsp vanilla extract
Pinch of salt
100 g dark chocolate
50 g butter
2–3 tbsp condensed milk
Prepare the dry ingredients – Sift flour, cocoa powder, baking powder, bicarbonate of soda, and salt into a bowl.
Mix the wet ingredients – Whisk condensed milk, sugar, eggs, oil, and vanilla until smooth.
Combine gently – Fold the dry ingredients into the wet mixture without overmixing.
Add hot liquid – Slowly pour in hot water or coffee, stirring until the batter becomes glossy and smooth.
Transfer to tin – Pour into a lined cake tin and smooth the top.
Bake until set – Bake at 170°C (340°F) for 40–45 minutes until a skewer comes out mostly clean.
Cool completely – Let the cake cool before adding icing or decorations.