Chicken Dish

• 1 chicken (baked)
• 1 onion (chopped)
• 240 ml sour cream
• 120 gr monterey jack cheese (shredded)
• 80 ml mayonnaise
• 60 gr pine nuts
• 14 gr butter melted
• 12 slices mushrooms (sliced)
• 2 slices stalks celery (sliced)
• 1 package campbells cream of chicken soup