Combine broccoli, soup, 1⁄2 cup cheese, sour cream, pepper, pimento and 1⁄2 can onions.
Pour into casserole dish, cover and bake at 350° for 30 minutes.
Top with remaining cheese and onions, bake uncovered for at least 5 more minutes.
For a larger crowd, feel free to double or triple the recipe. It is a big hit!