Butcher'S Cut Sliders

• 5 tablespoons red wine vinegar, divided
• 1 teaspoon sugar
• 1/2 cup thinly sliced shallots
• 12 ounces ground sirloin
• 1/4 teaspoon salt
• 1/4 teaspoon freshly ground black pepper
• Cooking spray
• 1 tablespoon extra-virgin olive oil
• 1 teaspoon Dijon mustard
• 1 teaspoon lower-sodium soy sauce
• 1 1/2 cups arugula
• 1 tablespoon chopped fresh chives
• 2 tablespoons canola mayonnaise
• 1 ounce blue cheese, crumbled (about 1/4 cup)
• 8 sourdough slider buns

1. Combine 1/4 cup vinegar and sugar in a small bowl, stirring until sugar dissolves. Add shallots to vinegar mixture; toss. Cover and chill 30 minutes. Toss. Drain; set aside.
2. Divide beef into 8 equal portions; gently shape each portion into a 1/4-inch-thick patty, taking care not to pack beef. Sprinkle both sides of patties evenly with salt and pepper. Heat a grill pan over medium-high heat. Coat pan with cooking spray. Add patties to pan; cook 2 minutes on each side or until desired degree of doneness; do not press on patties as they cook.
3. Combine remaining 1 tablespoon vinegar, oil, mustard, and soy sauce in a large bowl, stirring with a whisk. Add arugula and chives; toss gently to coat. Combine mayonnaise and cheese in a small bowl. Spread bottom half of each bun with about 2 teaspoons mayonnaise mixture. Top each slider with 1 patty, about 1/4 cup arugula mixture, 1 tablespoon pickled shallot, and 1 bun top.

red wine vinegar, sugar, shallots, ground sirloin, salt, freshly ground black pepper, cooking spray, extravirgin olive oil, mustard, lower, arugula, fresh chives, canola mayonnaise, blue cheese, buns

Taken from www.myrecipes.com/recipe/butchers-cut-sliders (may not work)