Phyllo Turkey Pot Pie | Williams Sonoma

Ingredients

• 14 Tbs. (1 3/4 sticks) (7 oz./220 g) unsalted butter
• 1 cup (5 oz./155 g) plus 2 Tbs. all-purpose flour
• 1/3 cup (3 fl. oz./80 ml) Madeira
• 2 Tbs. chicken demi-glace
• 7 cups (56 fl. oz./1.75 l) chicken stock
• 1 large yellow onion, diced
• 4 celery stalks, sliced 1/8 inch (3 mm) thick
• 1 lb. (500 g) cremini mushrooms, thinly sliced
• 1 Tbs. chopped fresh thyme
• 2 tsp. chopped fresh tarragon
• 1 bay leaf
• 8 oz. (250 g) small red-skinned potatoes, finely diced
• 8 cups cubed cooked turkey (about 3 lb./1.5 kg total)
• 1 bag (1 lb./500 g) frozen pearl onions
• Kosher salt and freshly ground pepper