Roast chicken pie

Ingredients

• 40 gram butter
• 1 onion, finely diced
• 100 stalk celery, finely chopped
• 1 clove garlic, crushed
• 1 tablespoon plain flour
• 1 packet of roast chicken gravy mix
• 1 1/2 cup water, plus ½ cup water for the stuffing mix
• 2 cup shredded chicken meat
• 2 cup roasted vegetables (kumara, potato, pumpkin), cooked and diced
• 1/2 cup frozen peas
• 2 sheets ready rolled puff pastry
• 1 stuffing mix (available in packets at the supermarket)
• spray oil
• fresh herbs and salad greens, to serve