Here's the recipe for the yummy banana toffee filling:

Banana Toffee Filling

2 ripe bananas (pealed diced and tossed in lemon juice)

1 can sweetened condensed milk (14 ounces)

114g butter (1 stick)

110 grams brown sugar

2 ounces dark corn syrup

Directions:

Banana Toffee Filling:

Combine sweetened condensed milk, butter, brown sugar and dark corn syrup in a medium sauce pan over medium heat. Once, the butter has melted and sugar dissolved bump up the heat to medium high and simmer the toffee until thickened 5-8minutes. Allow the toffee to cool off the heat and then toss in banana chunks.

This recipe is enough to fill two 6 inch 3 layer cakes