Portobello Burgers with Balsamic Mayonnaise | VegWeb.com, The World's Largest Collection of Vegetari

Ingredients

• 2 portobello mushrooms, stems removed
• 8 ounces vegan cream cheese
• 2 shallots or green onions, chopped
• 2 cloves garlic , minced
• 1/2 teaspoon thyme
• 1/4 cup fresh parsley, chopped
• salt and pepper, to taste
• olive oil, as needed
• 1/4 cup vegan mayonnaise
• 1 1/2 tablespoons balsamic vinegar
• 1/4-1/2 teaspoon ground black pepper
• romaine lettuce, to serve
• sliced tomatoes, to serve
• vegan buns, to serve