Butter Burgers

Name: Butter Burgers
Prep time: P0Y0M0DT0H10M0.000S
Cook time: P0Y0M0DT0H25M0.000S
Total time: P0Y0M0DT0H35M0.000S
Yield: 6 burgers
Ingredients: 1 stick plus 6 tablespoons unsalted butter, at room temperature; 2 onions, chopped; Kosher salt and freshly ground pepper; 1 pound ground beef sirloin; 6 soft hamburger buns, split

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Level: Easy
Total: 35 min

Prep: 10 min
Cook: 25 min

Yield: 6 burgers

Level: Easy
Total: 35 min

Prep: 10 min
Cook: 25 min

Yield: 6 burgers

Ingredients

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1 stick plus 6 tablespoons unsalted butter, at room temperature

2 onions, chopped

Kosher salt and freshly ground pepper

1 pound ground beef sirloin

6 soft hamburger buns, split

Directions

Preheat the broiler. Melt 2 tablespoons butter in a large cast-iron skillet over medium heat. Add the onions and cook until translucent, 6 to 8 minutes. Add 1/3 cup water, cover and continue cooking until the onions are golden brown, about 15 more minutes. Season with salt and pepper. Transfer the onions to a bowl and wipe out the skillet.
Divide the meat into 6 loose balls, then gently flatten into thin patties. Heat the skillet over high heat. Add the patties to the hot skillet, smash them flat with a spatula and season with salt and pepper. Cook, flipping once, until well done, about 3 minutes per side.
Meanwhile, toast the buns under the broiler. Put the patties on the bottom buns and top each with 1/4 cup sauteed onions. Smear 2 tablespoons butter on the cut side of each top bun, then put on top of the burgers. Slice in half and serve immediately.