Combine chuck, salt and pepper in a large bowl. Gently blend with a fork. Use moistened hands to form 8 3/4-inch-thick patties.
Grill or broil burgers over moderate heat (about 5 inches from heat source) on one side for 5 minutes. Carefully turn and cook on other side for about 4 minutes for medium-rare burgers. Serve on warm buns, topped as desired.