Parmesan Burgers with Aioli

Ingredients: 1 1/3 lbs. lean ground beef 1/2 cup fi nely chopped onion 1/2 tsp. each sea salt and ground black pepper 1/4 cup Worcestershire sauce 1-1/4 cups shredded Parmesan cheese 2 Tbl. chopped parsley 4 each whole grain hamburger buns (Rudi’s or Ezekiel) 1 Tbl....