-
For pastry cream:.
-
Bring half and half to simmer in heavy medium saucepan.
-
Whisk sugar, eggs, yolk and flour in medium bowl to blend.
-
Gradually whisk in hot half and half.
-
Transfer to saucepan.
-
Whisk over medium heat until mixture thickens and comes to a boil, about 5 minutes.
-
Boil 1 minute.
-
Pour into medium bowl.
-
Stir in vanilla.
-
Press plastic wrap onto surface of pastry cream. Cover; chill until cold about 4 hours. Can be made 1 day ahead and kept chilled.
-
For crust:.
-
Butter 9-inch diameter glass pie dish.
-
Stir butter and chocolate in heavy small saucepan over low heat until smooth.
-
Mix in cookie crumbs.
-
Press into bottom and sides of pie dish.
-
Chill 30 minutes, or until firm.
-
To make ganache:.
-
Heat cream and butter in medium saucepan over medium heat until mixture is hot, but do not boil.
-
Remove from heat; add chocolate and vanilla.
-
Whisk until smooth.
-
Reserve 2 tablespoons chocolate ganache in small bowl at room temperature; pour remainder over crust.
-
Chill crust until ganache is firm, about 30 minutes.
-
To complete pie:.
-
Thinly slice 3 bananas and arrange them over the chocolate ganache.
-
Whisk vanilla pastry cream until smooth.
-
Spread pastry cream evenly over bananas.
-
Drizzle reserved ganache over top; draw toothpick through cream and drizzle to marbelize.
-
Refrigerate until pastry cream is set; about 3 hours. (Can be made 1 day ahead and kept refrigerated).
-
Garish pie with banana slices and French Vanilla Cool Whip piped on with a star tip.