Instructions

• In a small bowl whisk the mayonnaise ingredients. Cover and refrigerate.

  Related Grill Skills

  Chopping Parsley

  Chopping Thyme

  Mincing Garlic

  Zest Then Juice a Lemon
• Mix the ground chuck, salt, and ¾ teaspoon pepper. Gently form four patties of equal size, each about ¾ inch thick. With your thumb or the back of a spoon, make a shallow indentation about 1 inch wide in the center of each patty to prevent them from forming a dome as they cook.
• Prepare the grill for direct cooking over medium-high heat (400° to 500°F). 
• Lightly brush the onion slices on both sides with oil, and brush the cut side of the buns with oil. Grill the onion slices and the patties over direct medium-high heat, with the lid closed, until the onions are lightly charred on both sides and the patties are cooked to medium doneness (160°F), 8 to 10 minutes, turning once. During the last 30 seconds to 1 minute of grilling time, place the cheese on the patties to melt, and toast the buns, cut side down, over direct heat.
  Lightly brush the onion slices on both sides with oil, and brush the cut side of the buns with oil. Grill the onion slices and the patties over direct medium-high heat, with the lid closed, until the onions are lightly charred on both sides and the patties are cooked to well done (160°F), 8 to 10 minutes, turning once. During the last 30 seconds to 1 minute of grilling time, place the cheese on the patties to melt, and toast the buns, cut side down, over medium-high heat.
  Lightly brush the onion slices on both sides with oil, and brush the cut side of the buns with oil. Grill the onion slices and the patties over medium-high heat, with the lid closed, until the onions are lightly charred on both sides and the patties are cooked to well done (160°F), 8 to 10 minutes, turning once. During the last 30 seconds to 1 minute of grilling time, place the cheese on the patties to melt, and toast the buns, cut side down, over medium-high heat.

  Related Grill Skills

  Slicing an Onion
• Build each burger on a bun with the mayonnaise, a patty, and onion slice, and a lettuce leaf. Serve warm.