INGREDIENTS
1 tbsp
butter
2
large sweet onions, thinly sliced (about 1 pound)
1/4 tsp
salt
1/2 tsp
ground black pepper
1/2 tsp
dried thyme
1 tbsp
white wine (or marsala, sherry vinegar)
4
pieces cooked bacon, crumbled
3 oz
shredded Gruyere cheese
1/2 cup
sour cream
1/2 cup
mayonnaise