Ingredients 2 large portobello mushrooms (each about 4 inches in diameter) 2 tablespoons olive oil, divided Kosher salt and freshly ground black pepper 1/4 cup mayonnaise 2 tablespoons basil pesto 2 whole-grain hamburger buns, split 4 Roma tomato slices 2 slices fresh goat cheese 1/2 cup fresh baby spinach leaves For the full recipe visit our blog:http://simplybetterliving.sharpusa.co...