Spinach and Blue Cheese Burger

配料

2 tablespoons vegetable oil, divided

2 medium yellow onions, thinly sliced

Kosher salt

Freshly ground black pepper

2 large hamburger buns, split

2 (1/3-pound) hamburger patties

3 ounces Roquefort or blue cheese

1 tablespoon crème fraiche or plain Greek yogurt

2 handfuls baby spinach

步骤

Arrange a rack in the top third of the oven and heat to 350°F. Meanwhile, heat 1 tablespoon of the oil in a large frying pan over medium heat until shimmering. Add the onions and sauté until lightly browned. Reduce the heat to medium-low, season with salt and pepper, and cook until golden brown and caramelized, about 20 minutes. Toast the buns in the oven until warmed through, 3 to 5 minutes; set aside.

Place the cheese and crème fraîche or yogurt in a small microwave-safe bowl and heat in the microwave for 20 seconds. Stir to combine.

Season the patties generously with salt and pepper. Heat the remaining 1 tablespoon oil in a medium frying pan over high heat until shimmering. Add the patties and cook until desired doneness, 1 1/2 to 2 minutes per side.

Divide the caramelized onions between the bottom buns. Top with a hamburger patty. Spread the cheese mixture over the hamburger patties, divide the spinach over the cheese mixture, and close with the top buns.