Lazy Acres - Rotisserie Chicken Pot Pie

Ingredients

• 1 frozen pie crusts, thawed per manufacturer's instructions
• 6 tablespoons butter, divided
• 1/3 cup finely diced yellow onion
• 2 cloves garlic
• 2 carrots, rinsed, peeled, and sliced in half moons
• 2 stalks celery, rinsed and sliced
• 1 cup Yukon gold potatoes, rinsed, peeled, and ¼ diced (about 2-3 potatoes)
• 1/3 cup all-purpose flour
• 1 3/4 cups chicken stock
• 1/2 cup heavy cream
• 1 tablespoon fresh thyme leaves, rinsed and chopped
• 1/4 cup flat leaf parsley, rinsed and chopped
• 2 1/2 cups chopped rotisserie chicken
• 1 cup frozen peas
• 1 egg, beaten
• Salt and pepper