- STEP 1
Heat oven to 200C/180C fan/gas 6. Melt the sugar and butter together on a low heat without stirring the mixture. Once the sugar has melted, turn up the heat and bubble until it turns a deep caramel colour. If the butter separates from the caramel, take the pan off the heat and add 1 tbsp of warm water, stirring until the butter emulsifies again.
- STEP 2
Pour the caramel into a 23cm cake tin with a solid base and spread the caramel out quickly with the back of a warm spoon. Slice the bananas into 2cm-thick pieces and arrange them, cut-side down, in concentric circles in the tin, then sprinkle over a pinch of sea salt and half the orange zest.
- STEP 3
Cut the pastry into a circle 3cm larger than the tin. Lay the pastry on top of the bananas and tuck the edges down inside the tin. Bake in the oven for 25-30 mins until the pastry is risen and cooked through. Whisk the double cream with the icing sugar until soft peaks form. Add the rum, cinnamon and remaining orange zest, and whisk until just combined.
- STEP 4
Leave the tart to cool in the tin for 5 mins, then carefully turn the tart out onto a large plate, wearing oven gloves in case the hot caramel splashes. Serve with the cream.