Heat oven to 350°F. Spray 13x9-inch (3-quart) glass baking dish with cooking spray.
Microwave frozen broccoli as directed on bag for maximum time; drain.
In large bowl, mix broccoli, soup, 2/3 cup of the French-fried onions, and the salt and pepper. Spoon into baking dish.
Bake 20 to 25 minutes or until broccoli is tender. Sprinkle with remaining French-fried onions. Bake about 5 minutes longer or until onions are golden brown.