Jack-o'-lantern Chicken Pot Pie - West Georgia Woman

Ingredients

• 1 whole cooked and cooled rotisserie chicken, all meat pulled and shredded
• 1 cup yellow onion, chopped
• 1 cup carrots, peeled and chopped small
• 3/4 cup celery, chopped small
• 1/2 cup (1 stick) butter
• 2 tablespoons vegetable or canola oil
• 1/2 cup all-purpose flour
• 3 cups chicken broth
• 3/4 cup heavy whipping cream
• 10 ounces frozen corn
• 10 ounces frozen peas
• 1 tablespoon fresh rosemary (chopped finely)
• Salt and black pepper to taste