Place sheet of puff pastry on a clean surface. Use a breakfast bowl or round dish slightly larger than your (+-15cm) baking dishes as a guide, and using
a sharp knife, cut 2 rounds out of each sheet of pastry. Discard scraps and set rounds of pastry aside.
Smear the bottom of 4 x (+-15cm) oven safe frying pans, mini skillets or round ceramic dishes with 1 tbsp of butter in each, then sprinkle 2 tbsp of sugar evenly over the bottom of each dish.
Arrange banana slices on top of sugar, starting from the middle and working outwards incircles, slightly overlapping banana slices.
Top each dish with a round of puff pastry, tucking in the edges so that it doesn’t hang over the rim of the dish.
Place dishes on a large baking tray then bake in preheated oven until puff pastry is puffed up and golden and the filling is bubbling up around the edges, about 20-25 minutes.
Carefully invert each dessert onto serving plates and serve while still warm with a scoop of vanilla ice-cream or a generous dollop of whipped cream.