Monster Mushroom Burger - Paula Deen

Ingredients

• 4 large portobello mushroom caps
• 3 tablespoons balsamic vinegar
• 1 tablespoon extra-virgin olive oil
• ½ teaspoon salt
• ¼ teaspoon coarsely ground black pepper
• ½ cup plain nonfat Greek-style yogurt
• 1 tablespoon fresh chopped rosemary
• 1 Lime
• 4 large slices whole-grain peasant bread
• 1 cup Baby arugula
• 1 large tomato
• 1 red onion
• ½ cup roasted red pepper strips