Chicken Legs Stuffed With Blue Cheese And Walnuts

Name: Chicken Legs Stuffed With Blue Cheese And Walnuts
Ingredients: 6 large whole chicken legs (thigh and drumstick); Kosher salt and freshly ground black pepper; 1/3 cup walnuts; 2 tablespoons unsalted butter; 6 ounces button mushrooms; 3/4 cup fresh bread crumbs; 2 large egg yolks; 1/4 cup crumbled bleu de Bresse or stilton cheese; 1 tablespoon walnut oil; 3 ounces thick-sliced bacon; 12 shallots; 1/4 cup Sauvignon Blanc or other dry white wine; 1/2 cup rich veal stock (below) or low-sodium beef or chicken broth; 2 tablespoons heavy whipping cream; Chopped flat-leaf parsley for garnish; 5 pounds veal breast; 1 large yellow onion; 1 large carrot; 2 bay leaves; 3 thyme sprigs, or 1/4 teaspoon dried thyme; 12 flat-leaf parsley sprigs