INGREDIENTS
1
Onion, large
1 tbsp
Rosemary, fresh
1 tbsp
Thyme, fresh leaves
1/2 cup
Chicken broth, low-sodium
3 tbsp
Worcestershire sauce
1
Kosher salt and freshly cracked black pepper
6
Demi french baguettes
3 tbsp
Butter, unsalted
12
slices Gruyere cheese
1 (3--5 pound) bone-in turkey breast