Cook cauliflower in boiling salted water to cover 5 to 6 minutes. Drain well. Repeat procedure for broccoli.
Heat half-and-half in a saucepan over low heat (do not boil). Add blue cheese and cook, stirring constantly with a wire whisk, until cheese melts. Remove from heat. Whisk in mayonnaise.
Transfer cauliflower and broccoli to a serving bowl. Pour blue cheese cream over vegetables; toss gently. Sprinkle with chopped green onions and pecans.
Elizabeth on 37th
very tasty and absolutely excellent. make sure not to over cook the brocolli or cauliflour or it will be more like puree.