Seville orange drizzle cake

Preheat the oven to 180˚C, gas mark 4. Grease a 900g loaf tin and line with parchment. Beat the butter and brown sugar with electric beaters for 4-5 minutes, until light and fluffy. Beat in the zest of 1 orange. Slowly beat the eggs into the batter, adding a spoonful of flour if the mixture starts to curdle.

Fold in the flour and baking powder until just smooth, then stir in 1 tbsp orange juice. Pour into the lined loaf tin and bake for 45-55 minutes, until golden and a skewer inserted into the centre comes out clean.

As soon as the cake comes out of the oven, pierce the top all over with a skewer. Mix the remaining orange juice (top up with regular orange juice if you don’t have enough from the marmalade oranges) and zest with the granulated sugar and spoon all over the top. Cool completely in the tin before removing and serving.