To prepare a warm green bean and potato salad with goat cheese recipe, you'll first need to prepare the ingredients. Wash the green beans and potatoes and cut them into bite-sized pieces. Toss them with the olive oil, thyme, salt, and pepper to taste. Add the chopped scallions and cook them until they're just tender, about 5 minutes. Remove them from the heat and set them aside to cool. Meanwhile, combine the mayonnaise, mustard, green onions, celery salt and paprika. Mix the dressing ingredients together and add it to the salad. Serve warm or at room temperature.