Parkin Cake

1. Heat oven to 160C/140C fan/gas 3. Grease a deep 22cm/9in square cake tin and line with baking parchment. Beat the egg and milk together with a fork.
2. Gently melt the syrup, treacle, sugar and butter together in a large pan until the sugar has dissolved. Remove from the heat. Mix together the oatmeal, flour and ginger and stir into the syrup mixture, followed by the egg and milk.
3. Pour the mixture into the tin and bake for 50 mins - 1 hr until the cake feels firm and a little crusty on top. Cool in the tin then wrap in more parchment and foil and keep for 3-5 days before eating if you can – it’ll become softer and stickier the longer you leave it, up to 2 weeks.
   50 minutes1 hour

Cooking notes

Baked goods are unforgiving with rounding — use weights rather than volumes whenever possible, and verify pan capacity if you scale up or down significantly.

For volume-to-weight conversions of any ingredient — flour, sugar, butter, salts — use the ingredient converter. To translate the recipe's oven temperature between °C, °F and gas mark, see the temperature converter.

When you scale this recipe up or down, remember that cooking time does not scale linearly. A doubled cake takes longer, but not twice as long; a doubled soup takes roughly twice as long. The cooking-time guide gives sensible starting estimates by dish geometry.