Balsamic Vinegar

Ingredients – 4 large portobello mushrooms – 2 tablespoons olive oil – 1 teaspoon garlic powder – 1 teaspoon onion powder – Salt to taste – Black pepper to taste – 4 hamburger buns – 1 cup fresh spinach – 1 large tomato, sliced – 1 avocado, sliced Method 1. Preheat the grill or a […]