Delicious & easy. Definately take the time to very slowly carmelize the onions.
this was delicious- couldn't find puff pastry dough so i used 7 sheets of filo dough (cut in half right out of the package), using a brush to spread melted butter in between layers. then i placed topping on the raw dough and baked at 325 for 20 minutes. i will definitely make this again, thank you