Preparation
Combine cookies and melted butter in a mixing bowl and mix well. Press cookies mixture into the base and sides of 26 cm loose bottom tart tin and set in the fridge for 10 minutes.
Meanwhile, in medium non-stick saucepan, combine NESTLÉ® Sweetened Condensed Milk , butter and cornstarch. Bring to boil over medium heat with constant stirring; cook and stir for 1 minute. Remove from heat and pour a small amount into egg yolks and mix then put the egg yolks mixture into the same saucepan. Cook over medium heat for 2 minutes and remove from heat. Add lemon juice, lemon zest and stir.
Pour the mixture over the prepared tart base and set in the fridge for ½ hour or until set.
In a medium bowl, combine NESTLÉ® Cream , melted chocolate and water and pour evenly all over the filling.
Place in the fridge until the top is firm to slice.