Easy Chicken Pot Pie

• 425 gr stove top chicken stuffing mix
• 425 gr chicken (cooked)
• 300 ml water (hot)
• 290 gr mixed vegetables (frozen thawed)
• 240 ml milk
• 40 gr margarine
• 40 gr mushrooms (drained)
• 1 gr thyme leaves (dried)
• 1 package cream of chicken soup