Cauliflower Casserole

Looking for a different Side Dish, try this Cauliflower Casserole.
Ingredients:
1 large Cauliflower (chopped),
10-1/2oz. Condensed Cream of Mushroom Soup,
1/2 cup Mayonnaise,
1/4 cup Half & half,
1 Egg (beaten),
1/2 cup Mozzarella Cheese (shredded),
2 tbsp Parmesan Cheese (grated)
2 tbsp Breadcrumbs