cranberry sauce (or any tart berry jam)
2 meduim onions, cut thinly
about 1 Tbsp butter
salt and sugar
Saute the onions on low for 10 minutes, add a sprinkle of salt and sugar and keep stirring until they begin to caramelize. Butter the bread and set a layer of brie, cranberry sauce and a scoop of the caramelized onions. Put the other bread on top and toast the sandwich on low heat until the crust is golden and the cheese is melted. Then be prepared to swoon.