Take out the quick flaky pastry if refrigerated, and preheat the oven to 220ºC (425ºF). If you're making the pastry from scratch, use the freezing time and the chilling time to wash and chop your filling ingredients (you could blitz them in the food processor too).
Roll out the pastry thinly and cut out 6 X 15 cm (6 inch) circles and place them on parchment paper in tray or lightly oiled trays. You could also cut the pastry dough into two halves and then divide each half into three portions and roll each portion out into a circle.
Pile the cooled bacon, mushroom and broccoli mixture on to the pastry circles, and spread them out, leaving a small border of pastry.
Serving: Serve hot or cold with a salad or tomatoes.
You can use any mushroom. As for the cheese, if you do not have Emmenthal cheese on hand, use Cheddar, as this one also melts easily. The bacon can be substituted too — use sweeter versions of cured ham like speck, Parma, pancetta or prosciutto. Ah, but I did not forget the broccoli substitutes: asparagus, cauliflower or spinach.