1. Melt the butter gently in a large non-stick frying pan, taking care not to let it brown. Add the orange juice and warm through.
2. Add the bananas, and cook for a couple of minutes, using two wooden spoons to gently turn them over. (Don't worry if they break up, they'll still taste the same!).
3. Add the orange zest, raising the heat, so that the mixture thickens a little.
4. Warm the orange liqueur in a separate pot, pour it over the bananas, then remove the pan from the heat and add the brandy. Put the pan back onto the heat and set light to the pan to flambé them. Serve immediately.