Creating a Banoffee Pie is a rewarding process that involves careful layering and a touch of patience. Follow these detailed steps to craft this delightful dessert:

Step 1: Prepare the Biscuit Crust

1. Crush the biscuits: Place the digestive biscuits in a food processor and pulse until fine crumbs form. Alternatively, place them in a ziplock bag and crush using a rolling pin.
2. Mix with butter: In a bowl, combine the biscuit crumbs with melted butter. Mix until the crumbs are evenly coated and resemble wet sand.
3. Form the crust: Press the mixture into the base and up the sides of a 9-inch springform pan or pie dish. Use the back of a spoon or a flat-bottomed glass to ensure an even layer.
4. Chill: Place the crust in the refrigerator for at least 30 minutes to set.

Step 2: Make the Caramel Filling

1. Combine ingredients: In a saucepan, combine the sweetened condensed milk, butter, and brown sugar.
2. Cook the caramel: Place the saucepan over medium heat and stir continuously until the sugar has dissolved and the mixture begins to boil.
3. Thicken: Reduce the heat to low and continue stirring for about 10 minutes or until the caramel thickens and takes on a rich golden color.
4. Cool slightly: Remove from heat and let the caramel cool for a few minutes before pouring it over the chilled biscuit crust.
5. Chill again: Return the pie to the refrigerator for at least 1 hour, allowing the caramel to set.

Step 3: Assemble the Pie

1. Layer the bananas: Once the caramel layer has set, arrange the sliced bananas evenly over the top.
2. Whip the cream: In a large bowl, whip the heavy cream with powdered sugar and vanilla extract until soft peaks form.
3. Top with cream: Spread the whipped cream over the banana layer, creating a smooth, even surface.
4. Garnish: Add chocolate shavings or a light dusting of cocoa powder for an extra touch of elegance.