Ingredients

• 1 pound fresh white mushrooms
• 1 cup sliced celery
• 1/4 cup chopped fresh parsley
• 1/4 cup diced Swiss cheese
• 1/2 cup chopped green onions
• 1/2 cup olive oil
• 1/3 cup red wine vinegar
• 1 tablespoon prepared Dijon-style mustard

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Instructions

1. In a large bowl, whisk together the oil, vinegar and mustard. Add mushrooms, celery, parsley, cheese and onions and toss until evenly coated. Refrigerate at least 2 hours before serving.