Juicy Butter Burger Sliders With Sweet Russian Sauce And Arugula Pesto

• Burger ingredients
• 3 tablespoons Olive oil
• 1 handful Red onion minced
• 3 tablespoons Kosher Salt & Black pepper to taste
• 1 tablespoon Chinese five spice
• 3 tablespoons Balsamic vinegar
• 2 pounds Ground beef 80% lean
• 3 tablespoons Cold butter cut into cube
• 1 packet Hawaiian rolls
• 1 packet cheddar cheese
• Russian Sauce & Arugula Pesto
• 1/2 cup Mayonnaise
• 2 tablespoons Cornichons chopped
• 2 tablespoons Ketchup
• 2 tablespoons Balsamic vinegar
• 1 tablespoon Chopped Capers
• 2 tablespoons Garlic
• 1/4 cup Olive oil
• 3 tablespoons Toasted Walnuts
• 2 cups Fresh Arugula
• 1 teaspoon Fresh Lemon juice

1. For the sliders: Heat the olive oil in a medium skillet over medium heat. Add the onions, season with a bit of salt and pepper, and cook until softened and translucent, about 5 minutes. Let cool.rnrnIn a large bowl, combine the sauteed onions, five-spice powder and 1 tablespoon of the balsamic vinegar, and season with a generous pinch of salt and of pepper. Add about one-quarter of the ground beef, and gently mix together until combined. Add the remaining ground beef and gently mix, making sure not to overmix.
2. Divide the meat into approximately 2-ounce portions, and form each into a ball. Insert a cube of butter into the center of each ball, then lightly press into patties about 3/4-inch thick and 2 inches in diameter. Place the patties on a baking sheet, cover with plastic, and refrigerate until ready to cook.rnrnFire up the grill or grill pan to medium-high. Cook the sliders about 2 to 3 minutes per side for medium doneness. After flipping, drizzle each slider with a bit of the remaining balsamic. Set two pieces of cheddar on each slider about 2 minutes before it is done cooking. Place the sliders on buns, and serve with sauces on the side.
3. For the sweet Russian sauce: Combine the mayonnaise, cornichons, ketchup, balsamic and capers in a small bowl; mix until blended.
4. For the arugula pesto: Combine the garlic and 2 tablespoons of the olive oil in a mini chopper or food processor, and pulse until the garlic is chopped. Add the toasted walnuts and pulse until finely chopped. Add the arugula, the remaining 2 tablespoons olive oil and the lemon juice, and season with salt. Pulse just until everything is finely chopped, not pureed.

ingredients, olive oil, handful red onion, kosher salt, spice, balsamic vinegar, ground beef, butter, hawaiian rolls, cheddar cheese, russian sauce, mayonnaise, ketchup, balsamic vinegar, capers, garlic, olive oil, walnuts, fresh arugula, lemon juice

Taken from food52.com/recipes/81301-juicy-butter-burger-sliders-with-sweet-russian-sauce-and-arugula-pesto (may not work)