Chicken Pastry Turnovers - Food Gardening Network

Ingredients

• 5 1/2 tablespoons unsalted butter
• 1 small onion, diced
• 2 garlic cloves, minced
• 1 celery stalk, diced
• 1 carrot, diced
• 1/3 cup all-purpose flour
• 3/4 cup chicken broth, low-sodium preferred
• 1/2 cup white wine
• 3/4 cup half-and-half
• 1 teaspoon Dijon mustard
• 1 teaspoon fresh thyme, minced, plus more for garnish
• 1/2 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper
• 2 boneless, skinless chicken breasts, cooked and diced or shredded (about 2 cups)
• 3/4 cup frozen peas, thawed
• 1 (14.1-ounce) package refrigerated pie crusts
• 1 egg white
• 1 tablespoon whole milk