Sweet tooth serenade

Serves ten? Really? Not to me, although one portion contains half the slimming club’s recommended calories.
Set the oven, 180℃. Incinerate some of the little devils while it bakes.
Beat together butter, sugar, three eggs, fold in flour.
What’s next? Only three tablespoons? A misprint. Double that. Wow, fruity. I believe in healthy eating. That's two of my five-a-day. Result!
Bake for an hour.
Hurry UP. Check with a skewer. Uh-huh. Bit soggy. That will do, can’t wait.
I wouldn’t win Bake Off, I’m no Mary Berry but my marmalade cake is—
no, I am not sharing.