Sweet onions are named for where they are grown. Walla Walla onions, from Washington and Vidalia® onions, grown in Georgia, are available in the spring.
After putting the burgers on the grill, choose a clean plate for the cooked burgers.
To broil patties, place on broiler pan; broil 4 to 6 inches from heat using times above as a guide, turning once. During last 1 to 2 minutes of cooking time, place buns cut side up on broiler pan; heat until toasted.