Step 2: preheat oven to 220°c/200°c fan-forced. Place bananas, cut side-up, in a 3cm-deep, 19cm x 30cm (base) baking tray. Place butter and sugar in a saucepan over medium heat. Cook, stirring, for 3 minutes or until melted and smooth. Pour over bananas. Bake for 12 to 15 minutes or until golden. Set aside to cool for 5 minutes.
Step 4: meanwhile, make sauce place chocolate and cream in a saucepan over medium-low heat. Cook, stirring with a metal spoon, for 3 to 4 minutes or until melted and smooth.
Step 6: top banana mixture with scoops of ice-cream. Drizzle with chocolate sauce. Sprinkle with peanuts. Serve.