Step #1
Make toffee cake batter as directed on the packet. Fold in the two mashed bananas.
Step #2
Pour half the batter into a greased & lined 2lb loaf tin. Spread the caramel along the middle of the loaf.
Step #3
Pour the other half of the batter over the caramel to fill the tin. Bake at 160C for 50-60 mins until a toothpick/cake tester comes out clean.
Step #4
Allow to cool. Whip butter until light and airy. Add icing sugar and beat until full combined.
Step #5
Add vanilla & a splash of milk if you want a looser texture. Spread icing over the top of the fully cooled loaf.
Step #6
Drizzle caramel over the top using a piping bag or spoon. Slice & enjoy!