Grilled Portobello Mushroom Burgers With Chimichurri Sauce recipes

Name: Grilled Portobello Mushroom Burgers With Chimichurri Sauce recipes
Ingredients: 3 tablespoons balsamic vinegar; 1/3 cup extra virgin olive oil; 1/4 teaspoon salt; 1/4 teaspoon pepper; 4 portobello mushrooms, stems removed; 1/3 cup grated mozzarella cheese; 4 hamburger buns, regular or whole wheat; 2 Roma tomatoes, sliced; 3/4 cup (packed) roughly chopped Italian parsley; 2 cloves garlic, minced; 1-1/2 tablespoons red wine vinegar; 1 tablespoon minced fresh oregano; 1/8 teaspoon salt; 1/8 teaspoon crushed red pepper flakes; 1/4 cup extra virgin olive oil