Begin by separating egg yolks from whites.

Whisk together sugar, flour, and egg yolks until smooth.

Heat milk in a separate pan until it simmers.

Gradually add the milk to the egg mixture, stirring constantly.

Cook the custard until it thickens, then add vanilla extract.

In a serving dish, layer vanilla wafers and sliced bananas.

Pour the custard over the layers, ensuring even distribution.

Repeat the process for additional layers.

Whip the cream until stiff peaks form.

Gently spread the whipped cream over the final custard layer.

Garnish with banana slices or crushed wafers for a decorative touch.