01 -
Combine milk, heavy cream, and sugar in a medium saucepan over medium heat. Whisk occasionally until hot but not boiling.
02 -
Whisk egg yolks in a separate bowl. Gradually add half the hot milk mixture to the yolks while whisking constantly to prevent curdling.
03 -
Return the egg mixture to the saucepan with remaining milk mixture. Add cornstarch and salt. Cook over medium heat, whisking continuously until thickened and bubbling. Remove from heat and stir in vanilla extract.
04 -
Allow the pudding to cool slightly before assembling the layers.
05 -
In a 9x9-inch dish, layer Biscoff cookies on the bottom, followed by sliced bananas, then pour pudding over. Repeat layering and finish with a pudding layer.
06 -
Cover and refrigerate for at least 3 hours to meld flavors and firm the pudding.
07 -
Top with whipped cream and crushed Biscoff cookies or banana slices if desired. Slice and serve chilled.