Mix the condensed milk, milk and margarine . Micro on high for 8 mins, stirring after 4 mins.

Place layer of biscuits at bottom of dish.

Mixmaizena, little milk, vanilla and egg well.

Add this mix to hot mix and micro on high for 4 or 5 mins, stirring after each . Mix must be quite thick.

Pour mixture over back of spoon onto base of dish.

Crumble extra biscuit, mix with cinnamon and sprinkle over tart.

Set in fridge