Add Craisins, balsamic vinegar and salt. Mix well.
Cover and cook over medium-low heat for about 5 minutes or until peppers are slightly tender.
While peppers are cooking, place all dressing ingredients in a food processor and pulse 3 or 4 times; alternatively, whisk together by hand. Process or whisk until smooth and creamy.
Place mixed field greens in a salad bowl. Pour dressing over and toss gently. Top with warm pepper mixture. Serve warm.