Portobello mushroom caps make a great vegetarian alternative to barbecued beef burgers.
1/2 cup balsamic vinegar
1/4 cup extra virgin olive oil
2 cloves garlic, minced
1 tsp dry basil
1 tsp dry oregano
2 tbsp fresh lemon juice
Salt and freshly ground black pepper to taste
6 4" portobello mushrooms, stems trimmed
6 whole wheat buns, toasted
1 bunch arugula
Step 1: Prepare barbecue for grilling at medium-high heat. Whisk together vinegar, oil, garlic, basil, oregano and lemon juice in large bowl. Season to taste with salt and pepper.
Step 2: Brush mushroom caps with vinaigrette and set on grill. Grill until mushrooms are tender, about 10 minutes per side. Serve immediately on whole wheat buns spread with mayonnaise and dijon mustard and top with arugula.