Deluxe Crabmeat Casserole

Ingredients

• 1 cup mayonaise
• 2 eggs, beaten
• 1 onion, chopped
• 1 can cream of mushroom soup
• 1, 8 ounce package Cheddar cheese, shredded
• 1, 8 ounce can mushrooms
• 2, 7 ounce cans shrimp (or equal amount frozen)
• 2, 7 ounce cans crabmeat (or equal amount frozen)
• 1 package brocolli, thawed
• 1 package cauliflower, thawed
• 1 cup potato chips, crushed
• 1/2 stick butter, cut in pieces