The Best Mary Berry Chicken Casserole Recipe 🍗🥘

Ingredients

• 4 tablespoons of butter
• 4 tablespoons of all-purpose flour
• 2 cups of chicken stock
• 1 cup of milk
• Salt and pepper, to taste
• 4 chicken breasts, cut into bite-sized pieces
• 2 tablespoons of vegetable oil
• 1 onion, chopped
• 2 garlic cloves, minced
• 2 carrots, peeled and sliced
• 2 celery stalks, chopped
• 1 bay leaf
• 2 teaspoons of dried thyme
• 2 cups of frozen peas
• 2 cups of grated cheddar cheese
• 1/4 cup of chopped parsley, for garnish