Biggest Sandwich I Ever Made

Ingredients:
300g Cooked Chicken (you can use leftovers from day before)
100g Green Olives
250g Sweetcorn
250ml Fresh Cream
250g Light Mayonnaise
75g Parmesan Cheese
1 Onion
Fresh Coriander
12 Slices of Bread
Salt
Black Pepper
Spicy Flakes