For the filling:

• 2 tablespoons unsalted butter
• 1 tablespoon olive oil
• 1 small onion (diced)
• 2 cloves garlic (minced)
• 2 medium carrots (diced)
• 2 celery stalks (diced)
• 1/3 cup all-purpose flour
• 2 cups cooked shredded chicken (rotisserie works great)
• 2 cups chicken broth
• 1/2 cup whole milk or heavy cream
• 1 cup frozen peas
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 1/2 teaspoon dried thyme

For the biscuits:

• 2 cups all-purpose flour
• 1 tablespoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 teaspoon garlic powder
• 1/4 cup grated Parmesan cheese
• 1/4 cup chopped fresh herbs (like parsley, chives, or dill)
• 1/2 cup cold unsalted butter (cut into small cubes)
• 3/4 cup buttermilk

For brushing:

• 2 tablespoons melted butter
• 1 tablespoon grated Parmesan
• 1 tablespoon chopped herbs (optional)