Bistro Burgers with Pickled Onion

Yields 4 servings

Ingredients:

• 2 teaspoons olive oil, divided
• 1 red onion, thinly sliced
• Kosher salt and freshly ground black pepper, to taste
• 1 teaspoon sugar
• 2 tablespoons red-wine vinegar
• 1 clove garlic, minced
• 3 tablespoons mayonnaise
• 1 pounds ground beef
• 4 split brioche rolls

Directions:

1. Heat 1 teaspoon olive oil in a medium skillet over medium high heat. Add onion, and cook until softened, about 2 minutes. Season with salt and pepper, to taste.
2. Add the sugar and vinegar; toss to coat. Let mixture cool.
3. In a small bowl, combine the garlic and mayonnaise.
4. Divide ground beef into 4 balls. Press each lightly to form 3/4-inch-thick patties; season with salt and pepper, to taste.
5. Heat remaining 1 teaspoon olive oil in a grill pan or cast-iron skillet over medium high heat. Grill the patties for 3 minutes on each side for medium-rare or 4-5 minutes for medium, flipping only once.
6. Serve burgers on rolls with pickled onions and garlic mayonnaise.

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