Every good picnic includes something for the meatless crowd, so don’t forget that your vegetarian friends love a good burger, too. Our favorite meatless burger recipes aren’t trying to “fool” herbivores by mimicking beef; these burgers are inherently delicious and loaded with good stuff everybody loves: big, beefy Portobello mushrooms; black beans; nuts; and spice, spice, spice.
Giant Portobello Burgers with Caramelized Onions
