Preparation:
Preparation time: 25 mins
Cooking time: 15 mins
Serving: 8
Ingredients:
- 2 sticks (8 ounces) cold unsalted butter
- 3 pounds ground beef, preferably sirloin
- 1 tablespoon kosher salt
- 8 slices cheese, such as American, cheddar, or Swiss (optional)
- For serving: split hamburger buns, lettuce, sliced tomato, thinly sliced red onion
Instructions:
- Grate the butter. Using the large holes of a box grater, grate the cold butter into large, thin pieces. (Use the wrapper from the butter to catch the butter shards and make moving them easier.)
- Form the patties. Place the ground beef in a large bowl and sprinkle the butter on top. Using your hands, quickly and gently fold the butter into the beef. Shape the burgers into 8 (6-ounce) patties about 4 inches in diameter and 3/4-inch thick.
- Season the patties. Place the patties on a rimmed baking sheet and season both sides with salt. Be generous, but you might not use all the salt called for. Set aside while you prepare the grill.
- Prepare the grill for medium-high heat. Heat an outdoor grill to direct, medium-high heat. Scrape the grill grates clean if needed.
- Grill for 4 minutes each side. Place the patties on the grill in a single layer. Grill the burgers for 4 minutes — expect a few flare-ups as the butter melts. Using a thin metal spatula, flip the burgers and grill until the burgers are browned and crisp on the outside, about 4 minutes more.
- Serve the burgers. If using cheese, place a slice on each patty during the last minute of grilling. Serve immediately.
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