INGREDIENTS
2 tbsp
butter
1 3/4 lb
onions
1 serving
kosher salt
1 tbsp
thyme
1
bay leaf
1 tsp
flour
1/4 cup
wine
4 cups
beef stock
1 tsp
lemon juice
1 serving
pepper
1 tsp
lemon juice
1/2 cup
swiss
1 slices
baguette cut on the diagonal optional
1 serving
shape