Portobello Steaks

Ingredients : 4 large portobello mushrooms 3 tablespoons balsamic vinegar 3 tablespoons vegan Worcestershire sauce 2 tablespoons olive oil 2 cloves garlic minced 1 teaspoon onion powder salt and ground black pepper to taste cooking spray Methods : Remove stems and clean the mushrooms; set aside. Mix vinegar, Worcestershire, oil,...