Delicious fruity dessert. Great with vanilla ice cream. This is for a large cobbler, which serves 6 generous portions (or 8 slightly less generous ones!) if you don't have a large dish, or want to less, use a smaller dish and half the sponge mixture, but keep it nice and fruity!
Every oven is different, mine took 45 minutes to cook, but check after 20 minutes (and turn) and then again regularly (if your oven has a light, check this way rather than keeping opening your oven and letting heat out, which can also stop a cake rising). A cake is cooked when a skewer inserted comes out clean.
You can use 1 teaspoon of bicarbonate of soda instead of the baking powder. You can also use 2 teaspoons vanilla extract instead of the vanilla paste.