Spray with cooking spray a roasting tin or pyrex 20 x 30 cm (8" x 12")

Whisk the eggs and castor sugar, until the mixture is thick and creamy.

Place butter in a jug with the milk and vanilla and microwave for 1min or until butter has melted and pour over the egg mixture.

Sieve the flour and BP and fold carefully into the batter so that there are no lumps of flour.

Pour into Pyrex.

Peel, core and slicce the apples, arrange them over the batter.

Sprinkle with the brown sugar, and cinnamon.

Place in oven 180°C (350°F) for 20 to 25 min until well risen and golden brown.