Long Boy "Burgers"

Ingredients:

2-4 (6-inch) sub rolls, split in half lengthwise
1 1/4 cup cornflakes, crushed
1/2 small onion, minced
1/2 cup whole or lowfat milk
6 tablespoons ketchup, separated
1 tablespoon Worcestershire sauce
1 teaspoon minced fresh thyme
1/2 teaspoon garlic powder
1 large egg, lightly beaten
Salt and pepper
1 1/2 pounds 90% lean ground beef
2 cups shredded cheddar cheese