Double Bacon Cheddar Burgers

In a large mixing bowl combine ground beef, shredded cheese, 1 cup chopped bacon, chopped onion, Worcestershire sauce, salt and pepper. Form mixture into 8 patties. Cover and refrigerate for 1 hour or up to 4 hours. 

Grill burgers on a medium- to high-heat barbecue grill about 5 minutes per side or until internal temperature reaches 160 degrees.

Brush slices of sourdough bread with melted butter.  Grill slices of bread until light brown grill marks show. Serve each burger between two slices bread.  Garnish with bacon slices, cheddar cheese, pickles, onions, barbecue sauce and bread slice, if desired.