Preheat oven to 350*F
Place broccoli in a steaming basket on stove and steam for 5 minutes or until broccoli is tender to a fork.
Remove broccoli from stove and chop into bite sized pieces. Place into a medium size mixing bowl.
Add to broccoli, soup, mayonnaise, butter, eggs, onion, salt and pepper. Mix well.
Add ¾ cup of cheese to broccoli mixture and mix well.
Spray a 8x8 square casserole dish with cooking spray.
Pour entire contents into an 8x8" square baking dish.
Top with remaining ¾ cup of cheese and Ritz crackers.
Bake for 30 minutes or until cheese is melted and top is golden.
