1In a medium saucepan, combine the milk and flour. Whisk together until smooth.
Place the saucepan over medium heat and cook, stirring constantly, until the mixture thickens and comes to a gentle boil.
In a separate bowl, beat the eggs lightly. Gradually add a small amount of the hot milk mixture to the eggs, whisking constantly to temper the eggs.
Pour the egg mixture back into the saucepan with the remaining milk mixture, stirring constantly.
Cook over low heat, stirring constantly, until the custard thickens and coats the back of a spoon.
Remove the saucepan from the heat and stir in the vanilla extract and sugar until well combined.
Slice the ripe bananas and layer them in serving dishes.
Pour the warm custard over the bananas, ensuring they are well covered.
Allow the custard to cool slightly, then refrigerate for at least 1 hour before serving.
Serve chilled and enjoy your Banana Vanilla Custard.