Cook the green beans in a small amount of boiling water in a saucepan for 3-4 minutes, until tender-crisp. Drain.
Fry the bacon in a skillet until crisp. Remove the bacon with a slotted spoon to a paper towel to drain. Add the beans to the bacon drippings and cook over medium heat for 2 minutes. Add the blue cheese and heat until the cheese melts. Stir in the bacon and pecans and season to taste with salt and pepper.