Paul uses his blackberry glut in a dish to serve chook whisperer Tabitha. This takes 1.5 hours to cook.
Preheat the oven to 200C. Butter and flour an 8-cup capacity shallow baking dish.
In a medium bowl, combine the flour and sugars. In a small bowl, combine the eggs, 1 cup cream and vanilla extract and whisk well. Make a well in the centre of the flour mixture and pour the cream mixture into the centre using a steady, thin stream. Whisk together to form a smooth batter, then let rest for 20-30 minutes. Stir through 2 tablespoons more cream to loosen batter if needed.
Meanwhile, whisk the remaining cream to form soft peaks, set aside.
Pour the batter into the dish, scatter over the blackberries and press some into the batter. Bake for 25-30 minutes, or until golden and risen. Serve immediately, with whipped cream on the side.