- 4
Ingredients
- 9 tablespoons salted butter, softened
- 1 onion, chopped
- 1 tablespoon water
- Salt and pepper
- 1 pound 90 percent lean ground beef
- 4 hamburger buns, toasted
- 1/2 teaspoon vegetable oil
- 4 slices American cheese
Preparation
Step 1
1. Melt 1 tablespoon butter in medium saucepan over medium heat. Add onion, water, and 1/4 teaspoon salt and cook, covered, until tender, about 5 minutes. Remove lid and continue to cook until translucent and just beginning to brown, about 3 minutes. Cover and keep warm.
2. Transfer beef to rimmed baking sheet and separate into 4 equal mounds. Gently shape each mound into 4 1/2-inch-wide by 1/2-inch-thick patty. Combine 3/4 teaspoon salt and 3/4 teaspoon pepper in bowl and sprinkle both sides of patties with mixture. Refrigerate until ready to cook, up to 30 minutes.
3. Spread 2 tablespoons butter onto each bun top; set aside. Heat oil in 12-inch skillet over high heat until just smoking. Using spatula, transfer patties to skillet and cook without moving them for 3 minutes. Flip patties and cook for 1 minute. Top each burger with 1 slice of American cheese and continue to cook until cheese is melted, about 30 seconds longer.
4. Transfer burgers to bun bottoms. Divide onion mixture among burgers and cover with buttered bun tops. Serve immediately.