Long Boy Cheeseburgers | America's Test Kitchen

Ingredients

• 2 (6-inch) sub rolls , split in half lengthwise
• 1 1/4 cups cornflakes , crushed
• 1/2 small onion , minced
• 1/3 cup whole or low-fat milk
• 6 tablespoons ketchup
• 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-percent lean ground beef
• 2 cups shredded cheddar cheese