Dammit, can't find on net. Ok, here goes:
Ingredients for cake:
225g soft unsalted butter
225g golden granulated sugar, plus 2 tbsp
3 medium eggs
150ml milk
175g self raising flour
50g cocoa
1.5 tsp baking powder
Ingredients for sauce:
100g dark muscovado sugar
100g salted butter
150ml double cream
Tin: a 30x23cm baking tin, 4cm deep, buttered (ie something like a swiss roll tin)
Method:
Preheat oven to 190 or 175 fan. Cream together the butter and the 225g sugar. Beat the eggs in one at a time. Beat in milk (don't worry if it curdles). Sift together the flour, cocoa and baking powder, then fold in. Tip into baking tin and smooth surface. Scatter over the 2 tbsp sugar. Bake 30 mins until skewer comes out clean. Cool in tin. To make sauce, heat sugar, butter and cream together in a pan until smooth. Serve cake cut in squares with sauce spooned over.
That's it. It would also be v nice with a dollop of vanilla ice cream, but not v easy to transport! It says serves 8 generously; I reckon 8-12. For that many people, I might increase the sauce quantities slightly. For your fussy eater, you could serve it plain without sauce. Incidentally, it's an Annie Bell recipe.