Cook broccoli with salt according to package directions; drain. Add soup, mayonnaise and chopped peanuts. Mix well. Add eggs and onions; mix well. Melt butter and pour over bread crumbs. Pour broccoli mixture into greased 1-1/2 or 2 quart casserole dish. Sprinkle with grated cheese and top with buttered bread crumbs. Bake at 350° F. for 30 minutes.