Onion and Cheddar Burgers

These actually didn't turn out perfectly for me. We did them on the grill and they were a little wet so they fell apart. But, when all was said and done, they still tasted awesome. I didn't quite have 2 pounds of meat so that may have been the problem. Makes 6 servings.

2 pounds ground beef
1 cup chopped onion
1 egg, beaten
1/2 cup ketchup
1 teaspoon salt
1/2 teaspoon pepper
1/4 teaspoon dried oregano
1 tablespoon Worcestershire sauce
3/4 cup shredded Cheddar cheese
6 hamburger buns

In a large bowl, combine beef, onion, egg and ketchup. Season with salt, pepper, oregano, and Worcestershire sauce. Lightly mix in cheddar cheese. Shape beef mixture into 6 thick patties. Preheat oven on broiler setting.
Place hamburgers on broiler pan. Broil, turning once, until cooked through, about 5 minutes per side. Serve on hamburger buns.