Let ground beef stand at room temperature for 10 minutes before grilling.
Preheat grill to 350° to 400° (medium-high) heat. Combine first 4 ingredients gently. Shape mixture into 6 (5-inch) patties.
Grill, covered with grill lid, 4 to 5 minutes on each side or until beef is no longer pink in center. Serve on Homemade Hamburger Buns.
Try These Twists!
Pimiento Cheese-Bacon Burgers: Stir 1/4 cup mixed chopped fresh herbs (such as basil, mint, and oregano) into meat mixture. Proceed as directed. Top each burger with pimiento cheese, cooked bacon slices, lettuce, and tomato slices.
Sun-dried Tomato-Pesto Burgers: Stir 1 (3-oz.) package sun-dried tomato halves, chopped, and 1 garlic clove, pressed, into meat mixture. Proceed as directed. Top each burger with refrigerated pesto, sliced goat cheese, and sliced pepperoncini salad peppers.
Pineapple-Jalapeño Burgers: Stir 1/3 cup pickled sliced jalapeño peppers, minced, into meat mixture. Proceed as directed. Grill 6 (1/4-inch-thick) pineapple slices over medium-high heat 1 to 2 minutes on each side. Top each burger with Cilantro-Jalapeño Cream, grilled pineapple, avocado slices, and a fresh cilantro sprig.
Great flavor . . . the pesto combination is wonderful.